YEAR 7 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 30 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.

Topic Section Marks

Biology Multiple Choice /10

Short Answer /35

Physical Science Multiple Choice /10 Short Answer /35

Total /90

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

Please do not turn the page until you are asked to do so

STUDENT NAME: _______________________________

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

11 A B C D

12 A B C D

13 A B C D

14 A B C D

15 A B C D

16 A B C D

17 A B C D

18 A B C D

19 A B C D

20 A B C D

MULTIPLE CHOICE QUESTIONS: PART A 1. Out of these animals: cat, dog, bird, rabbit, which is the odd one out? (a) Cat

(b) Dog

(c) Bird

(d) Rabbit

2. A vertebrate is an animal:

(a) that can fly

(b) that has a backbone

(c) that does not have a backbone

(d) that lives on land

3. Which of the following is not a member of the plant kingdom?

(a) trees

(b) mushrooms

(c) grass

(d) moss

4. What are three defining features of mammals?

(a) they have hair, scales and feed milk to their young

(b) they have hair, lay eggs and are endothermic (warm-blooded)

(c) they have hair, are endothermic (warm-blooded) and feed milk to their young

(d) none of the above

5. A decomposer is:

(a) an organism that breaks down dead or decaying organisms

(b) an organism that can make it’s own food from sunlight

(c) an animal that hunts down it’s prey

(d) a dying organism

6. A producer’s role in an ecosystem is to:

(a) produce offspring

(b) use the sun’s energy to produce energy

(c) consume other organisms

(d) none of the above

7. Select the level of classification in which organisms are the most similar:

(a) Kingdom

(b) Genus

(c) Order

(d) Species

8. The definition for the term niche is:

(a) The role in which an organism plays in the community it lives

(b) A number of food chains combined

(c) The place where an organism lives

(d) Areas with similar climatic conditions

9. Which is an example of a predator/ prey relationship?

(a) A horse eating grass

(b) A vine hanging on a tree

(c) A fox eating a rabbit

(d) A tick on a deer

Plant → X → Mouse → Snake

10. What could the X be in the food chain above?

(a) Cow

(b) Slug

(c) Corn

(d) Eagle

11. The definition of a Force is:

(a) A push, pull or a twist

(b) The gravity of an object

(c) Balancing of objects

(d) All of the above

12. The unit used to measure forces is:

(a) Newton (N)

(b) Centimetre (Cm)

(c) Decibel (Db)

(d) Kilogram (Kg)

13. An example of a balanced force is:

(a) Two people playing tug-o-war with equal force

(b) Riding a bike up a steep hill on a windy day

(c) Skateboarding down a steep bumpy road

(d) Pushing a shopping trolley up an escalator with a broken wheel

14. Which of the following is NOT a way to reduce Friction?

(a) Lubricating the surfaces of objects

(b) Reducing the amount of pressure on the objects

(c)Reducing the amount of contact between objects

(d) Increasing the roughness of the surface of objects.

Question 15 and 16 refer to the picture below:

15 .North poles and South poles of the magnet are indicated by the letters. Which

magnets will repel each other?

(a) Pair 1 and 2

(b) Pair 2 and 3

(c) All of them

(d) Pair 3 only

16. Which magnets will attract each other?

(a) Pair 1

(b) None of them

(c) Pair 3

(d) Pair 1 and 2

17. Gravity a force of:

(a) Attraction

(b) Addition

(c) Subtraction

(d) Repulsion

18. If Earth did not have a gravitational field, what would happen to objects on the

Earth’s surface?

(a) Objects would sink into the ground

(b) Objects would float away into space

(c) Objects would stick together like magnets

(d) Objects would float above the ocean

19. Simple Machines that magnify the force you apply to do a job are called?

(a) Force Multipliers

(b) Force Minimiser

(c) Force Magnifier

(d) Gravity

20. A wheelbarrow is an example of:

(a) A first class lever

(b) A second class lever

(c) A third class lever

(d) A fourth class lever

END OF MULTIPLE CHOICE SECTION

PART B: SHORT ANSWER – BIOLOGY SECTION 30 Marks

21. Write the missing levels of classification in the list below in the correct space.

(4 marks)

Kingdom

Order

Genus

22. Create a dichotomous key that could be used to classify the following animals:

Snake Frog Rabbit Snail (4 marks)

23. Name the five classes of vertebrate (5 marks)

1._____________________________

2._____________________________

3._____________________________

4._____________________________

5._____________________________

24. List two types of human activity that impact on ecosystems. (2 marks)

_________________________________________________________

_________________________________________________________

Questions 25 - 27 refer to the food web below

25. Write down the names of two Secondary Consumers in the foodweb.

(2 marks)

_____________________

_____________________

26. Describe in detail what would happen if the rabbits were suddenly removed

from the food chain. (3 marks)

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27. Using the foodweb, identify a food chain that has four steps and write it down

in the space below. (4 marks)

28. Describe 3 things that your family could do to reduce their ecological footprint

(3 marks)

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

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29. An introduced species is a species that has been brought into an ecosystem

that it does not usually live in by human activity. Give an example of an

introduced species and give two negative effects that introduced species can

cause in an ecosystem. (3 marks)

Example: __________________________________________

Effects:

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

PART B: SHORT ANSWER – PHYSICS SECTION 30 Marks

30. Name three possible things that can happen to an object when a force acts on

it. (3 marks)

1. _______________________________________________________________

2.________________________________________________________________

3.________________________________________________________________

31. Name three types of Simple Machines. (3 marks)

1. _______________________________________________________________

2.________________________________________________________________

3.________________________________________________________________

32. In the boxes below draw a diagram of the following: You must label the

Effort, Fulcrum and Load. (6 marks)

1st class lever

2nd class lever

3rd class lever

33. Give one example of a situation when friction is useful and one example of a

situation when friction is not wanted. (2 marks)

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

34. Use the words below to complete the paragraph. You will not need to use

every word. (4 marks)

Weight Matter Gravity Mass Change Decrease

An object’s ___________ is a measure of how much matter it contains. An

object’s weight is a measure of how strongly ___________ pulls down on it. If an

object travels to the moon its __________ will decrease but its mass will not

______________.

35. Give two examples of contact forces and two examples of non-contact forces.

(4 marks)

Contact forces: _____________________________________________________

______________________________________________________

Non-contact forces: __________________________________________________

___________________________________________________

36. Describe what streamlining is and explain how streamlining can be used to

increase the top speed of a car. (3 marks)

___________________________________________________________________

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___________________________________________________________________

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37. Explain how you could make a simple compass using a bar magnet and other

items commonly found in a school science department. (3 marks)

_________________________________________________________________

_________________________________________________________________

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38. Give two examples of when you might experience an electrostatic force.

(2 marks)

_________________________________________________________________

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PART C – SCIENCE INVESTIGATION SECTION

Debbie carried out an investigation to find out the best way of lowering the

amount of friction on a ramp. She sets up 5 identical wooden ramps and covers

them in different substances. She then records the time it takes a wooden block

to slide down the ramp.

39. Identify the independent and dependent variables in the experiment.

(2 marks)

Independent Variable: ______________________________________________

Dependent Variable: ________________________________________________

40. Name 2 things that Debbie would need to keep the same to make it a fair test.

(2 marks)

___________________________________________________________________

___________________________________________________________________

The table below shows Debbie’s results:

Substance on Ramp Time for block to slide down ramp (seconds)

Cooking Oil 2.5 Syrup 6.5

Butter 3.0

Chalk 5.0 Wax 4.0

41. On the grid on the next page, draw a graph showing the data. (4 marks)

42. Using the data or your graph, write a conclusion for the investigation.

(2 marks)

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END OF PART C

END OF EXAM