YEAR 8 SCIENCE EXAMINATION Semester 2, 2017

WRITTEN QUESTION AND ANSWER BOOKLET

STUDENT NAME:

TEACHER NAME:

DATE: TIME ALLOWED FOR THIS PAPER: Reading time before commencing work: 10 minutes Working time for this paper: 1 hour 50 minutes

MATERIAL REQUIRED / RECOMMENDED FOR THIS PAPER: To be provided by the supervisor:

- This question and answer booklets - To be provided by the candidate:

- Pens, pencils, ruler, eraser

IMPORTANT NOTE TO CANDIDATES No other items may be taken into the examination room. It is your responsibility to ensure that you do not have any unauthorised notes or other items of a non-personal nature in the examination room. If you have any unauthorised material with you, hand it to the supervisor BEFORE reading any further. All iPads and mobile phones must be turned off and in your bag along with any other devices and notes. Bags are to be closed and placed under the desk. INSTRUCTION TO CANDIDATES:

1. Read through the paper to familiarise yourself with all of the questions.

2. Use a blue or black ballpoint / ink pen for the written answers. Use pencil for drawing the graphs.

3. Write your answers in this booklet.

4. Should you require more space than you have been given please use the spare sheet (at the back of this booklet) and ensure that you include your name and the question / statement to which you are responding.

AT THE END OF THE EXAMINATION:

- Any planning sheets or other pieces of paper MUST be handed in with this booklet. - At the end of the examination make sure that your name is on your booklet and any

other pieces of paper used.

Instructions to candidates

1. Sitting this examination implies that you agree to abide by the examination rules set down by Kinross College.

2. Answer the questions in the space provided.

3. You must be careful to confine your responses to the specific questions asked and to follow any instructions that are specific to a particular question.

4. A spare page is included at the end of this booklet. It can be used for planning your responses and/or as additional space if required to continue an answer. (a) Planning: If you use the spare page for planning, indicate this clearly

at the top of the page. If you choose to use lined paper for planning, ensure your name and the title is clearly printed.

(b) Continuing an answer: If you need to use the space to continue an answer give the page number. Fill in the number of the question (s) that you are continuing to answer at the top of the page.

5. This examination contributes towards your report. If you have any questions, please ask them during the ten-minute reading time. Manage your time wisely. Always provide substantiation (evidence). Make sure that what you have written makes sense.

Mark Allocations

Topic Section Marks Biological Science Multiple Choice /10

Short Answer questions

/35

Physical Science Multiple Choice /10

Short Answer questions

/35

Total

Note: Do not turn the page until you are asked to do so.

Year 8 Biology and Physics Multiple choice questions

1. An organelle is

a) found only in plant cells

b) found only in animal cells

c) a mini-organ found in cells

d) a substance that causes cancer

2. The job of the mitochondria in cells is to

a) Repair cell damage

b) Store cell waste

c) Control the cells activities

d) Release energy

3. Which of the following shows the correct sequence of air entering the human body?

a) Mouth, trachea, bronchi, bronchioles, alveoli, capillaries.

b) Mouth, alveoli, bronchi, bronchioles, trachea, capillaries.

c) Mouth, trachea, alveoli, bronchioles, capillaries, bronchi.

d) Capillaries, alveoli, bronchioles, bronchi, trachea, mouth.

4. What is the name of the moist and sticky substance that lines

areas of the respiratory tract?

a) Cilia

b) Mucus

c) Allergens

d) Antibodie

5. What is another name for the windpipe?

a) Larynx

b) Lungs

c) Oesophagus

d) Trachea

6. Describe peristalsis

(a) The chewing of food in the mouth

(b) Contraction and relaxation of the muscles that move food along

the digestive tract

(c) The absorption of digested food into the bloodstream

(d) The process of eliminating faeces

7. In which direction do veins transport blood?

(a) Away from the heart

(b) Back to the heart

(c) Towards the extremities

(d) To the lungs

8. The primary role of red blood cells is to

(a) transport oxygen

(b) transport glucose

(c) carry out the immune response

(d) form blood clots to repair damaged blood vessels

9. Which side of the heart has thicker muscle and why?

(a) The left because there is more room in that part of the rib cage.

(b) The left because it has to pump blood to the entire body.

(c) The right because it contains oxygenated blood.

(d) The right because it has to pump blood to the entire body.

10. Blood is prevented from moving in the wrong direction by:

a) Arteries

b) Veins

c) Valves

d) Capillaries

11. The male part of the flower, or stamen, consists of the a) Petals and sepals

b) Stigma and style

c) Ovules and ovary

d) Anther and filament

12. The action of the male sex cell joining with the female sex cell is called a) Fertilisation

b) Pollination

c) Seeding

d) Flowering

13. Kinetic energy is also known as: a) Heat energy

b) Movement energy

c) Stored energy

d) Light energy

14. Energy: a) Can be created, but not destroyed.

b) Cannot be created or destroyed.

c) Can be created and destroyed

d) Cannot be created, but can be destroyed.

15. Thermal energy is also known as; a) Heat energy

b) Movement energy

c) Stored energy

d) Light energy

16. Potential energy is also known as: a) Heat energy

b) Movement energy

c) Stored energy

d) Light energy

17. Four vehicles are travelling at the same speed. Which has the least kinetic energy? a) A bike

b) A car

c) A bus

d) road train

18. Which of the following is not a form of energy? a) Nuclear

b) Elastic

c) Friction

d) Kinetic

19. Four balls are positioned 10m above the ground. Which has the least gravitational potential energy? a) Ping pong ball

b) Golf ball

c) Cricket ball

d) Bowling ball

20. An archer shoots an arrow from a bow. The useful energy change as he releases the arrow is: a) Elastic kinetic

b) Kinetic elastic

c) Chemical gravitational

d) Gravitational sound

END OF PART A

STUDENT NAME: ______________________

YEAR 9 SEMESTER 2 2017 – EXAMINATION

Multiple Choice Answer Sheet

Circle the letter indicating the best answer.

1 A B C D

2 A B C D

3 A B C D

4 A B C D

5 A B C D

6 A B C D

7 A B C D

8 A B C D

9 A B C D

10 A B C D

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13 A B C D

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19 A B C D

20 A B C D

Written section

1. Describe three features that plant cells have that animal cells do not.

(3 marks) 1. __________________________________________________________

2. __________________________________________________________

3. __________________________________________________________

2. Which system is responsible for: (4 marks)

a. transporting gases around the body: ___________________________

b. processing food:___________________________________________

c. provides oxygen for the body:________________________________

d. Removing waste: __________________________________________

3. Label the following parts of the respiratory system on the diagram

below. (5 marks)

4. Why is it necessary for blood to circulate through the lungs? (2 marks)

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5. The diagram below shows the three kinds of blood vessels in the

body

A B C

i) which is the vein ____ artery ____ capillary ____ ? (3 marks)

ii) explain how you identified the vein (1 marks)

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6. Label the following parts of the heart on the diagram below:

Left atrium, left ventricle, aorta, vena cava, pulmonary artery (5 marks)

7. What is the main function of: (4 marks)

1. Red blood cells_________________________________________

2. White blood cells ________________________________________

3. Platelets _______________________________________________

4. Plasma ________________________________________________

8. Name two organs associated with the excretory system and describe their function. (4 marks)

1.___________________________________________________________

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2.___________________________________________________________

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9. Choose two of the body systems from the list and explain how they work together (are interdependent). You may use a diagram to help with your explanation if necessary.

Digestive system Circulatory system Respiratory system Excretory system (4 marks)

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10. Explain what asexual reproduction is. (2 marks) ___________________________________________________________________

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11. List an advantage and a disadvantage of sexual reproduction. (2 marks)

Advantage:

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Disadvantage:

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12. Below is an energy transfer arrow for a light bulb:

It shows that a light bulb converts electrical energy into a lot of heat energy and a little bit of light energy. Create energy transfer diagrams for the following: a) Electrical heater (2 marks)

b) Playing music on your phone (2 marks)

c) Watching a YouTube clip on a tablet (4 marks)

13. Petrol is burnt in a car engine to get the car moving; however, a lot of energy is wasted.

a) Name two forms of wasted energy produced in a car. (2 marks)

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b) What happens to this wasted energy? (1 mark)

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14. There are 3 main types of stored energy: a) ________________________ eg. a stretched rubber band, windup toy.

(1 mark)

b) ________________________ eg. candle (wax) is burning to give out light and heat.( 1 mark) c) Gravitational Potential energy eg. ___________________________________ (1 mark) 15. Energy efficiency is a calculation of the percentage of useful energy transformed.

a) Calculate the energy efficiency of a hairdryer that has 800 unit of energy input

and 600 units of useful energy output. (2 marks)

b) Calculate the energy efficiency of a kettle that wastes 120 units of energy output

and has 540 units of energy input. (2 marks)

Energy efficiency = useful energy output x 100 Energy input

16. List 2 things that have kinetic energy and explain why they have kinetic energy. (3 marks)

1. ________________________________________________________

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2. ________________________________________________________

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17. State the law of conservation of energy and explain what it means. (4 marks) ______________________________________________________________

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Investigation

A pair of students wanted to test which surface created the biggest bounce when they drop a tennis ball. They conducted an experiment where they dropped the same tennis ball from 3m onto 4 different surfaces and recorded the height the ball rebounds back up. The results are in the table below.

Surface

Type Ball rebound

height (cm) - 1 Ball rebound

height (cm) - 2 Ball rebound

height (cm) - 3 Ball rebound

height (cm)- Average

Grass 50 53 51

Carpet 74 69 68

Concrete 112 98 110

Wooden deck 86 92 99

1) Complete the table by filling in the average temperature drops (1 marks)

2) Graph the results on to the graph paper provided (5 marks)

Question over page

a) For this experiment state the: Independent Variable (1/2 mark)

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Dependent Variable (1/2 mark)

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Two Control Variables (1 marks) ____________________________________________________________________

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END OF PART B