What property of water causes water molecules to fall together
as raindrop instead of as individual molecules?
A solution is made by dissolving 10 g of salt in 500 g of water.
Identify the mass of the resulting solution.
• A. The object is less dense than water
• B. The object is more dense than water
• C. The object has the same density as water
• D. The object is buoyant
• A. Plants and animals are made up of cells but bacteria, protists, and fungi are not.
• B. All cells have a nucleus.
• C. Humans are made up of many cells, and bacteria are single celled.
• D. Not all cells use energy.
Sam places 5 g of baking soda in 5 g of liquid vinegar, and notices fizzing. After all the fizzing stops, 5 g of liquid remains. How much gas escaped during the reaction?
• A. In the right conditions, such as in foods, bacteria reproduce rapidly excreting harmful wastes.
• B. Bacteria are much smaller than eukaryotic cells and often use them as hosts.
• C. Breaking down harmful chemical substances in the environment is important.
• D. Outside of a living cell, a bacteria does nothing and remains inactive.
Kenny uses GIS to determine how increases in the pH level
affect the ability of sea mollusks to build shells. What is the independent variable in his
experiment?
• A. Radar measures radio waves or microwaves that are sent to surface and reflected back.
• B. Radar only measures radiation from the Sun that is absorbed by the surface.
• C. Radar only measures radiation that is absorbed by Earth’s atmosphere.
• D. Radar uses X-rays or gamma rays to measure the thermal energy of the surface.
• A. Freezing point will increase
• B. Freezing point will decrease
• C. Water will expand
• D. Water will evaporate
• A. It increases the quality of the drinking water in the basin
• B. It increases the level of contaminants that enter the basin.
• C. It decreases erosion in the area, reducing sedimentation in the basin.
• D. It decreases surface runoff that occurs in the basin.
• A. Fish filter these chemicals through their gills
• B. Microbes recycle and consume these products
• C. These chemicals are quickly buried in sediments
• D. Plants use these products to photosynthesize
• A. Average ocean temperatures have been rising since about 1985
• B. Average ocean temperatures will be higher in 2050 than they were in 2000.
• C. High sea surface temperatures provide the energy needed for strong hurricanes.
• D. The frequency of strong hurricanes is caused by high sea surface temperatures.
• A. Cell division replaces old cells and allows the organism to grow and reproduce.
• B. Cell division is only necessary for diseased or stressed organisms.
• C. Cell division only occurs in somatic cells of an organism.
• D. Cell division is not necessary for organisms.
• A. Mountain building
• B. Photosynthesis by aquatic plants
• C. Respiration and aquatic animals
• D. Weathering of rocks and soil
• A. The chipmunks on each side will evolve similarly.
• B. The chipmunks on each side will evolve differently.
• C. The chipmunks on each side will develop analogous structures.
• D. The two chipmunk populations will compete for food and space.
• A. Turbidity and stream flow increase, dissolved oxygen decreases
• B. Dissolved oxygen and turbidity decrease, stream flow increases
• C. Dissolved oxygen stream flow and turbidity all increase
• D. Dissolved oxygen, stream flow and turbidity all decrease
• A. To measure changes in the shoreline of a body of water
• B. To measure the damage from an earthquake
• C. To measure the population growth in a town
• To measure the growth of vegetation in a national forest
• A. Blocking the symptoms of nerve pain
• B. Pollutant emissions from smoke
• C. Pharmaceutical that increase longevity
• D. Natural insect control chemicals
• A. Monitoring erosion rates of a construction site
• B. Monitoring migration patterns of caribou to avoid interference with development plans
• C. Monitoring concentration of a greenhouse gas and its effect on cloud development
• D. Monitoring rainfall patterns in a region throughout the year
The vast majority of seismic (earthquake) and volcanic activity
in the world occurs along the plate boundaries. What does this
support?
Official believe the contaminants found in farmed salmon do not
pose a great health risk, and the demand for salmon outweighs these health risks. What is this
an example of?
• A. A risk-benefit analysis
• B. A social-technical system
• C. A GIS System
• D. A technological method
Carbonic acid water dissolves calcite and forms hollowed rock
formations or caves underwater. What is this an example of?
• A. How did you get started producing power?
• B. What gives you the right to separate things?
• C. Why are you so rigid?
• D. Have you always wanted to be a leader?
• A. Low number of macroinvertebrates
• B. Dissolved oxygen level of about 7.0
• C. pH level between 2.0 and 3.0
• D. Very cloudy appearance
What is the perimeter of silt fencing, sandbags, and gravel
around construction sites designed to eliminate?
• A. The spread of harmful chemicals into surrounding areas
• B. The loss of construction materials, such as nails from the site
• C. The erosion of exposed topsoil into surrounding areas
• D. The cross contamination of construction litter from the workers
What can scientists conclude form the discovery of two fossils of the same type of crab on two
different continents?
• A. The ocean once reached the height of these land surfaces.
• B. Crabs were once land-dwelling organisms
• C. The layers of rock are from the same geologic age.
• D. A strong earthquake was responsible for these mountain ranges.
• A. Healthier streams
• B. An algal bloom
• C. More evaporation of water into the atmosphere
• D. Fewer autotrophs in the rivers, streams, and lakes
• A. It is synthesized by people
• B. It is naturally found in plants
• C. It is generated by volcanoes
• D. It is left behind after water evaporates
Over millions of years, what do you expect would be another
likely adaptation of the Galapagos marine iguana
population?
• A. The development of webbed feet
• B. The development of wings
• C. The development of large eyes
• D. The development of longer legs
• A. Look at the samples under a light microscope
• B. Take the temperature of the samples
• C. Ignite the samples
• D. Add dye to the samples
• A. They can degrade watersheds
• B. They create safer sources of drinking water
• C. They can be broken down by UV light
• D. They can cause birth defects in wetland animals
• A. Eating little and never exercising
• B. Using plenty of antimicrobial products
• C. Keeping a clean environment
• D. Skipping vaccinations when recommended
Which of the following represents a way in which technology has been used to reduce or control
water pollution?
• A. Adding oxygen and enzymes to raw waste in sewage plants
• B. Fertilizers on crops
• C. Tilling the land
• D. Tractors and plows used on land
• A. Should humans be cloned?
• B. Should transgenic foods be labeled before they are sold to consumers?
• C. Should genetically modified crops be grown?
• D. Can microbes be used to clean up nuclear waste?