Baseball!Yet another way to review for the

KCCT test

Question • The diagram below shows a simple food web.

Which animal is classified as an omnivore?

a. red fox

b. deer

c. black bear

d. rabbit

The picture shows the circular path of a toy plane being swung around on a string. What path would the toy take if the string broke?

Question

Question

A ball is dropped into the still water of a child’s swimming pool. Which of the following describes the transfer of energy involved?

A. The gravitational potential energy will cause the ball to sink to the

bottom with no movement of water.

B. Wave energy in the form of ripples will move in a circle around and away from the ball.

C. Kinetic energy will cause the ball to rise and fall with the waves until it moves to the side of the pool.

D. The sound energy released from the ball will cause water to splash out of

the pool.

Question

Students in a science class placed ice cubes in a cup. They were studying variables that affect how long it takes the ice to melt.

Select the variable that would most likely NOT affect the time it takes the ice to melt.1. size of cup2. size of the ice cube3. number of students4. temperature of the room

Question

The atomic number of magnesium is 12. Its nucleus must contain

A. 6 protons and 6 neutrons.

B. 4 protons and 8 neutrons.

C. 12 protons

D. 12 neutrons

Question

A student added a small ball to a graduated cylinder containing 10 mL of water.

What is the volume of the ball?

A. 5 mL

B. 10 mL

C. 15 mL

D. 20 mL

Question

Which of the following diagrams best represents the relationship between galaxies, the universe, and solar systems?

Question

The terms gas exchange, diaphragm, and inhale are most closely associated with which system in the human body?

a. Circulatory

b. Digestive

c. Excretory

d. Respiratory

Question

• Name two differences between plant and animal cells.

Question

Which of the following statements is true about atoms?

A. Atoms only vibrate in living things.

B. Atoms vibrate only in living things and in once-living things.

C. Atoms only vibrate in non-living things.

D. All atoms in all substances vibrate.

Question

• Name the three main parts of a cell.

Question

• A can of regular soda and a can of diet soda were dropped into a bucket of water. The can of regular soda sank to the bottom but the diet soda floated. Which of the following statements best explains this observation?

a. the can of regular soda is less dense than the can of diet soda

b. The can of regular soda is more dense than the can of diet soda

c. The can of regular soda has more volume than the can of diet soda.

d. The can of regular soda has a small volume than the can of diet soda.

Question

• Which of the following questions may best be answered by studying an organism’s chromosomes?

a. What sex is the organism?

b. Is the organism endangered?

c. Where is the organism’s ecosystem?

d. How does the organism obtain its food?

Question

• A student holds a book at rest in an outstretched hand. The force exerted on the book by the student is equal to the book’s ______.

a. Mass

b. Weight

c. Volume

d. Density

Question

• A ball is thrown straight up and then falls straight back down. When it attains maximum height, the ball’s velocity is

________________.a. Equal to its displacement

b. Equal to its displacement divided by time

c. At its maximum

d. At its minimum

Question

• A container of cold water is dumped into a larger container of hot water. It is mixed and then let alone for a long time interval. The water temperature is found to

a. Randomly vary from region to region in the container

b. Be uniform throughout the container

c. Fluctuate at all positions in the container

d. Be greater at the bottom of the container.

Question

• Objects appear different in size and shape in a container of water due to

a. Refraction of the light waves

b. Interference of the water and light waves

c. Polarization of the light waves

d. Diffraction of the light waves

Question

• Extremely high temperatures are needed for fusion reactors to function efficiently. What state of matter is most common at these temperatures?

a. Gas

b. Liquid

c. Solid

d. Plasma

Question

• Which action will result in a product with new chemical properties?

a. Shredding a newspaper

b. Breaking a mirror

c. Cutting wood

d. Popping popcorn

Question

At convergent plate boundaries of oceanic and continental crust

A. oceanic crust is subducted.

B. continental crust is subducted.

C. oceanic crust is created.

D. no associated volcanism occurs.

Question

• Sterling silver is a combination of silver and copper. Which of the following is also a combination of two or more metals?

a. Aluminum

b. Lead

c. Gold

d. Brass

Question

• All living things contain which element?a. Helium

b. Sodium

c. Copper

d. Carbon

Question

• A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?

a. The balloon will be attracted to the rod.

b. The balloon will be repelled by the rod.

c. The balloon will remain in place.

d. The balloon will spin in circles.

Question A cup of water at 40oC and a cup of water at 5oC are left on a table.

Which graph correctly shows the temperature of the two cups of water as time passes?

Question The praying mantis is a predatory insect that often eats moths. The graph below shows the relative numbers of two species of moths over 12 weeks after the introduction of the predatory praying mantis.

What characteristics of this ecosystem is best indicated from this graph?

A. Species B was preferred as food over species A.

B. Species B may replace species A in this environment.

C. Species B will reproduce more rapidly than species A.

D. Species B was more abundant at the beginning of this time period

than species A.

Question The bones of a whale flipper are similar to the bones of a bat wing as shown in the illustration below.

What does this similarity in bone structure suggest about the whale and the bat?

A. They use the same methods to travel.

B. They evolved from a common ancestor

C. They can migrate to the same locations

D. They can manipulate objects in the same way.

Question

• Midocean ridges are usually found at a. Convergent plates

b. Divergent plates

c. Plates sliding past one another

d. Hot spots

Question

• A researcher found shark fossils on top of a mountain. This evidence suggest which of the following about this region?

a. It was once below a waterfall.

b. It was once part of a river bed.

c. It was once covered by an ocean.

d. It was once near a freshwater lake.

Question

• From year to year, farmers rotate different crops in the fields to improve soil nutrients. Why is crop rotation also an effective pest management method?

a. It allows chemicals to kill more pests.

b. It creates crops that are pest resistant.

c. It interrupts the life cycles of pests.

d. It allows pests to overpopulate.

Question

• Where is an igneous rock such as pumice most likely formed?

a. In a desert

b. In a creek bed

c. Near a volcano

d. Under a glacier

Question

• Moving water was the most important factor in forming which of these?

a. The Grand Canyon

b. San Andreas Fault

c. The Rocky Mountains

d. Mount St. Helens volcano

Question

• Which of the following questions is testable in a scientific investigation?

a. Are dogs better pets than cats?

b. Are dogs happy when they are walked?

c. Are cats more active at night than during the day?

d. Are cats easier to take care of than dogs?

Question

• Where is most of the Earth’s water located?a. Glaciers

b. Lakes

c. Oceans

d. Rivers

Question

Transpiration is a vital part of the water cycle. It is a part of

A. Condensation

B. Precipitation

C. Evaporation

D. Collection

Question

• Which of the following converts electrical energy into motion?

a. Light switch

b. Electric stove

c. Light bulb

d. Electric fan

Question

• Which best describes a parallel circuit?a. Electricity flows along one pathway.

b. The flow of electricity comes from one source.

c. Electricity flows along more than one pathway.

d. The flow of electricity comes from more than one source.

Question

• A human male carries the sex chromosomesa. XX

b. XY

c. YY

d. None of these

Question

• Prokaryote cells have no nucleus. Which of the following is an example of a prokaryote cell?

a. Virus

b. Bacteria

c. White blood cell

d. Algae

Question

The chart below shows a part of Mohs hardness scale for minerals.

Mineral Talc Gypsum Calcite Fluorite apatite

Hardness 1 2 3 4 5

A student is testing an unknown mineral for hardness. The unknown mineral is tested against fluorite, but neither mineral scratches the other. Which of the following conclusions can the student accurately make?

A, The unknown mineral and apatite will not scratch each other.

B. The unknown mineral and calcite will not scratch each other.

C. The unknown mineral will scratch apatite.

D. The unknown mineral will scratch calcite.

Question

. The elements on the left hand side of the Periodic Table are

A. metals.B. metalloids.C. non-metals.D. all gases.

QuestionTo test a theory, Tommy set out two beakers in a room that measured

220o C. In one beaker he poured 50 mL of water at 100oC and in the other he poured 50 mL of water at 800o C. He hypothesized that in 24 hours the water at 800o C would be at 220o C, but the water at 100oC would have stayed the same. Which of the following is correct?

A. Tommy was correct, one was at 100oC, the other was at 220o C.

B. Tommy was wrong, both were at 220o C.C. Tommy was wrong, neither had changed.D. Tommy was wrong, one was at 220oC, the other was

closer to 500o C.

Question

The number of chromosomes in a sex cell isA. double the number of chromosomes found in body cells.

B. triple the number of chromosomes found in body cells.

C. one half the number of chromosomes found in body cells.

D. one third the number of chromosomes found in body cells.

Question

Which is NOT a characteristic of the modern atomic model?

A. Electrons surround the nucleus.

B. An atom is neutral.

C. The nucleus takes up most of the volume of the

atom.

D. The nucleus is positively charged.

Question

Describe the energy transformations that occur in a portable CD player.

A. nuclear to electrical to mechanical

B. electrical to chemical to sound

C. chemical to electrical to sound

D. heat to electrical to sound

Question

• A spring scale is pulled downwards and readings are recorded.

Distance pulled

Spring scale reading

1.0 cm 4 N

1.5 cm 6 N

2.0 cm 8 N

2.5 cm 10 N

If the spring is pulled 3.5 cm, the spring should read

A. 12 N B. 13 N C. 14 N D. 15 N

Question

• A force of 5 N is required to increase the speed of a box from a rate of 1m/s to 3 m/s over 5 s along a level surface. What change would most likely require additional force to produce the same results?

a. Reduce the mass of the box

b. Increase the mass of the box

c. Make the surface of the box smooth

d. Make the surface of the floor smooth

Question

• What characteristic of motion could change without changing the velocity of the object?

a. The speed

b. The position

c. The direction

d. The acceleration

Question

• In comparison of metals to nonmetals, metals tend to have

a. Lower melting points and greater conductivity than nonmetals.

b. Lower conductivity and lower density than nonmetals.

c. Higher density and lower melting points than nonmetals.

d. Greater conductivity and high melting points than nonmetals.

Question

• Which of the following is found farthest from the center of an atom?

a. Nucleus

b. Proton

c. Neutron

d. electron

Question

Which of the following best describes an atom?

a. Protons and electrons grouped together in a random pattern

b. Protons and electrons grouped together in an alternating pattern

c. A core of protons and neutrons surrounded by electrons

d. A core of electrons and neutrons surrounded by protons

Question

• To express the distance between the Milky Way and other galaxies, the most appropriate measurement would be

a. Miles

b. Kilometers

c. Light-years

d. Astronomical units

Question

A piece of pine wood floats on the surface of the lake because the water exerts

a. An upward force equal to the weight of the wood

b. A downward force equal to the weight of the wood

c. An upward force equal to the weight of the displacement water

d. A downward force equal to the weight of the displacement water

Question• The following equations represent chemical

reactions.

1. 2Na + H2O NaOH + H2

2. H2 + O2 H2O

3. Mg + Cl2 MgCl2

4, NaOH + MgCl2 NaCl + MgOH

Which equation shows that the total mass during a chemical reaction stays the same?

a. 1 b. 2 c. 3 d. 4

QuestionThe table below shows the pH and reaction to litmus of four body fluids.

Body fluid pH Red litmus Blue litmus

Blood 7.4 Turns blue No change

Bile 8.2 Turns blue No change

Saliva 6.8 No change Turns red

Gastric juice 1.7 No change Turns red

This table shows that gastric juice is

a. Very acidic c. Positively charged

b. Very basic d. Negatively charged

Question

The inheritance of a trait in humans can best be determined by

a. A single allele

b. One or more pairs of alleles

c. One pair of chromosomes

d. The sex chromosomes of the offspring

QuestionA mineral supplement designed to prevent the common cold was given

to two groups of people during a scientific study. • Group 1 received 50 mg/day.• Group 2 received 100 mg/day.After 8 weeks neither group reported a case of the common cold.

Which of the following would have made the outcome of this study more valid?

a. Test only one group with 150 mg of the supplement.b. Give the supplement for both weeks for only 6 weeks.c. Create a third group to receive 75 mg of the supplement.d. Create a third group that does not receive the supplement.

Question

• Which of the following cell types is formed by meiosis?

a. Muscle cells

b. Sperm cells

c. Skin cells

d. Blood cells

Question

Which of the following structures is not found in bacteria?

a. Ribosomes

b. Mitochondria

c. Nucleus

d. Cell membrane

Question

• In humans the allele for unattached earlobes (L) is dominant to the allele for attached earlobes (l).

Punnett Square

L l

L 1 2

l 3 4

Based on the PS above, a child with attached earlobes is indicated in box

A. 1 B. 4 C. 2, 3 D. 1, 2, 3

Question

How is natural selection in the evolution of long-necked giraffes best explained?

a. Shorter necked giraffes were killed by longer neck giraffes.

b. Giraffe necks grew longer because of the bone structure of the animals.

c. Giraffes with longer necks survived because they were better suited to the environment.

d. Long necked giraffes mated only with other long necked giraffes.

Question

• Skeletal structures are common between two animals of different species. These structures probably exist because both species

a. Have a common food source.

b. Live in the same environment.

c. Have survived until the present time.

d. Have a common ancestor.

Question

The purpose for giving a person a vaccine is to

a. Introduce chemicals that destroy viruses.

b. Stimulate an immune response.

c. Prevent inflammation.

d. Cure a disease.

Question

• Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the following could be an unavoidable source of experimental error?

a. Length of the study

b. Variation in the strawberry plants

c. The cost of watering the plants

d. Fertilization during the study

Question

In most stable freshwater environments populations of Daphnia are almost entirely female and reproduce asexually. However, males are observed in low oxygen environments or when food is scarce. Based on these observations, a researcher suggests that male Daphnia develop in response to unfavorable environmental conditions. This is an example of a

a. Theoryb. Conclusionc. Hypothesisd. Result

Question

• The cell membrane of a red blood cell will allow water, carbon dioxide, oxygen, and glucose to pass through. Because other substances are blocked from entering, this membrane is called

a. Perforatedb. Semi-permeablec. Non-conductived. Permeable

Question

Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells

a. Are much smaller.

b. Have permeable membranes.

c. Have a higher rate of reproduction.

d. Have nuclei.

Questions

• Which of these organisms would most likely be found at the top of an energy pyramid?

a. Clams

b. Sardines

c. Sharks

d. Kelp

Question

Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers?

a. Rabbits have a high death rate.

b. There are few effective predators.

c. Additional rabbit species have been introduced.

d. There is an increase in rabbit competitors.

Question

Complete burning of plant material returns carbon primarily to the

a. Soil.

b. Water

c. Vegetation.

d. Atmosphere.

Question

A healthy individual is a carrier of a lethal allele but is unaffected by it. What is the probable genotype of this individual?

a. Two dominant normal allelesb. One recessive lethal allele and one

dominant lethal allelec. One recessive lethal allele and one

dominant normal alleled. One dominant lethal allele and one

recessive normal allele

Question

Earth has undergone some catastrophic changes from time to time. Which of these most likely explains why life on Earth continued following these catastrophes?

a. Dominant species had a slow mutation rate.b. Many species filled the same niche.c. A strong species had many characteristics.d. A wide diversity of species existed.

Question

• Which statement best describes the density of an atom’s nucleus?

a. The nucleus occupies most of the atom’s volume but contains little of its mass.

b. The nucleus occupies very little of the atom’s volume and little of its mass.

c. The nucleus occupies most of the atom’s volume and most of its mass.

d. The nucleus occupies very little of the atom’s volume but contains most of its mass.

Question

• Of four different laboratory solutions, the one with the highest acidity has a pH of

a. 11

b. 7

c. 5

d. 3

Question

• A day on Saturn takes about 10 hours. Which fact best explains this short day?

a. Saturn is less dense than Earth.

b. Saturn is much farther away from the sun than the Earth is.

c. Saturn rotates more rapidly than Earth.

d. Saturn’s orbit has greater eccentricity than Earth.

Question

• Which planet was formed from light gases from the outer solar nebula?

a. Mercury

b. Venus

c. Mars

d. Uranus

Question

• Evidence suggests that Earth is about 4.6 billion years old, even though no Earth rocks have been found that can be dated at more than 4 billion years old. This discrepancy is most likely caused by Earth’s original crust being

a. Difficult to date so precisely.

b. Subject to intensive erosion.

c. Blasted away during Earth’s formation.

d. Destroyed by solar radiation.

Question

• The existence of extraterrestrial life may never be proven, but this idea will become more scientifically acceptable over time if

a. No one disputes this in a scientific forumb. Hypotheses are made related to the idea.c. Alternate hypotheses are proposed and

confirmed.d. Increasing scientific evidence supports the

idea.

Question

• What is the source of energy for the sun?a. Hydrogen fusion

b. Internal combustion

c. Nuclear fission of metals

d. Burning of solar gases

Question

• Which of the following is best evidence that Earth’s continents were once in a vastly different position than they are today?

a. Penguins are found only in the Southern Hemisphere

b. Fossils of tropical plants are found in Antarctica.

c. Volcanoes encircle the Pacific Ocean.

d. Major rivers form deltas from continental erosion.

Question

• The sun is an average yellow star in the Milky Way galaxy, which is described as

a. An elliptical galaxy.

b. A spiral galaxy.

c. Irregular galaxy.

d. A dwarf galaxy.

Question

• The convergence of two continental plates would produce

a. Island arcs.

b. Rift valleys.

c. Folded mountains.

d. Trenches.

Question

• Which of the following provides evidence for plate tectonics?

a. Sea-floor topography

b. Ocean currents

c. Coriolis effect

d. Atmospheric temperatures

Question

• Earthquake vibrations are detected, measured, and recorded on instruments called

a. Sonargraphs.

b. Seismographs.

c. Richter scales.

d. Magnetometers.

Question

• Which of the following energy sources is most likely to be abundant in California due to its position on a plate boundary?

a. Wind

b. Nuclear

c. Solar

d. Geothermal

Question

• The moon is very hot on the side facing the sun and very cold on the dark side. This extreme temperature difference is primarily due to the moon’s

a. Mineral composition.

b. Thin atmosphere.

c. Reflective rocks.

d. Lack of volcanic activity.

Question

• Venus is warmed by solar radiation, but its thick cloud cover increases the temperature because the clouds

a. Prevent the escape of heat into space.

b. Convert solar radiation into heat.

c. Absorb short wavelengths, leaving heat.

d. Produce heat as they are pushed by strong winds.

Question

• Air moving from the poles toward the equator turns west. The primary cause of this global deflection is

a. The shape and size of land masses.

b. Larger cities surrounded by farm lands.

c. Changes in the magnetic field.

d. Rotation of the planet.

Question

• Which of these effects generally occurs as the result of a warm air mass and a cooler air mass converging at Earth’s surface?

a. The sky becomes clear.

b. Winds die down.

c. Cloud formation decreases.

d. Stormy weather patterns develop.

Question

• Earth’s atmosphere is divided into layers that are based upon their

a. Water content.

b. Relative humidity.

c. Gas content

d. Temperature gradient.

Question

• Name the four layers of the atmosphere in order from bottom to top.

Question

• The primitive atmosphere was deficient in free oxygen. What process was primarily responsible for the development of the present percentage of free oxygen in the Earth’s atmosphere?

a. Outgassingb. Photosynthesisc. Volcanic eruptionsd. Oxidation of iron-based minerals

Question

• A communication satellite is in a circular orbit around the Earth. If the speed of the satellite is constant, the force acting on the satellite is

a. zero.

b. Decreasing.

c. Points toward the center of Earth at all times.

d. Points in the direction the satellite is moving.

Question