YEAR 7 SCIENCE EXAMINATION

Semester 2 2016

MULTIPLE CHOICE QUESTION BOOK 1

STUDENT NAME:

TEACHER: DATE: Time allowed for this exam: (Book 1 and Book 2 Combined) 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: • Read through the paper to familiarise yourself with all of the questions. • Use a blue or black ballpoint / ink pen for the written answers. Use pencil for drawing the graphs. • Write your answers in this booklet. • 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

USE THE ANSWER SHEET (OVER THE PAGE) TO CIRCLE THE LETTER INDICATING THE BEST ANSWER.

PLEASE DO NOT TURN THE PAGE UNTIL YOU ARE ASKED TO

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

1. Which of the following statements about matter is true? (a) Matter can be weighed (b) Matter has volume (c) Matter can be solid, liquid or gas (d) All of the above

2. Molecules in a gas are:

(a) fixed and very close together (b) very close together and moving (c) far apart and moving (d) far apart and not moving

3. A group of students were given a sample of solid carbon dioxide (dry ice). They

placed it on the bench and waited for it to melt, but noticed that it changed from a solid straight into a gas. What did they observe happening?

(a) sublimation (b) solidification (c) evaporation (d) melting

4. A ___________ is a homogeneous mixture with tiny particles.

(a) suspension (b) colloid (c) solution (d) combination

5. When sandpaper smooths a piece of wood, what type of change is it?

(a) change of matter (b) physical change (c) chemical change (d) change of state 6. Which of the following separation methods is not for separating soluble substances?

(a) Evaporation

(b) Distillation (c) Decantation (d) Absorption

7. The definition of a mixture is

(a) A solvent that is soluble

(b) Two pure substances stirred together which cannot be separated again

(c) Two or more pure substances stirred together which are easy to separate

(d) Formed when a solid dissolves in a liquid

8. Which of the following is NOT a colloid?

(a) Sand in water

(b) Milk

(c) Dust in the air

(d) Fog

9. The term given to the change of state from a solid to a liquid is:

a) Condensation

b) melting

c) freezing

d) vaporisation

10. The name given to droplets of water which occur on the outside of cold glass of

water is known as:

a) Evaporation

b) Vaporisation

c) Sublimation

d) condensation

11. Out of these animals: cat, dog, bird, rabbit, which is the odd one out:

a) Cat

b) Dog

c) Bird

d) Rabbit

12. 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

13. The plant kingdom includes all of the following, EXCEPT:

a) trees

b) mushrooms

c) grass

d) moss

14. 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

15. A decomposer is:

a) an organism that breaks down dead or decaying organisms

b) an organism that can make its own food from sunlight

c) an animal that hunts down its prey

d) a dying organism

16. 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

17. What are two features of the phylum amphibians?

a) They have feathers and wings

b) They feed milk to their young and have hair

c) They have scales and live on land

d) They lay eggs and have a two-stage life cycle

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

a) Kingdom

b) Genus

c) Order

d) Species

19. 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

20. 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

END OF BOOKLET 1

COMMENCE BOOKLET 2 – OVER PAGE

YEAR 7 SCIENCE EXAMINATION

Semester 2 2016

Question and Answer Booklet 2

STUDENT NAME:

Time allowed for this exam: (Book 1 and Book 2 Combined) Reading time before commencing work: 10 minutes Working time for this paper: 1 hour 50 minutes

Marks received Multiple Choice

Chemistry Biology Investigating Total

(20)

(35)

(35)

(10)

(100)

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

Short answer: Chemistry Questions Complete the following table on Changes of State. (4 marks)

Definition/Description Term/Word

Water changing from a solid into a liquid

Water changing from a liquid into a gas

Water changing from a gas to a liquid

Water changing from a liquid into a solid

Match up the key word with the correct definition: (4 marks)

Inference A prediction or an ‘educated guess’

Qualitative observation A logical explanation

Quantitative observation An observation that involves descriptions

Hypothesis An observation that involves measurement

In the following beakers draw the particle arrangement for a solid, a liquid and a gas (3 marks)

Identify a piece of laboratory equipment that you would use to: (5 marks) Measure the temperature of boiling water________________________________ Measure out exactly 55ml of salt water__________________________________ Pour a liquid into a conical flask________________________________________ Find the mass of a small stone_________________________________________ Heating a strip of magnesium__________________________________________ Identify a food or drink that contains: (4 marks) Both a solid and liquid material________________________________________ Both a liquid and gas________________________________________________ Only solid_________________________________________________________ Only liquid________________________________________________________ Describe the key properties of a solid: (4 marks) ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ___________________________________________________________________________ Mr Alexander notices that when his pool is heated to 27°C, the water level falls by about 10cm each week. Explain how this can happen when 27°C is a lot lower than the boiling point of water, 100°C? (2 marks) ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Predict what would happen if the pool was: (2 marks) Not heated___________________________________________________________________________________________________________________________________________________________________________________________________________________________

Heated to a higher temperature, say 30°C (2 marks) _________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Explain how evaporation and crystallization process is used to produce the table salt we eat. (3 marks) _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Substances generally ____________ when heated and_______________when (2 marks) Biology Questions List the levels of classification in order. (4 marks)

______________________________________________

______________________________________________

______________________________________________

______________________________________________

______________________________________________

______________________________________________

______________________________________________ Name a primary producer. What is their role in an ecosystem? (2 marks)

Draw a dichotomous key to classify the following four animals: rabbit, snake, frog and snail. (4 marks)

Draw the energy transformation arrows onto the food web below. (4 marks)

What ecosystem would this food web be in? _______________________________________________ (1 mark) In the box below draw and label one food chain (of four steps) found in the food web above. (3 marks)

What would happen to this food web if a farmer used a poison to reduce the grasshopper population? Explain in detail. (4 marks)

Organism Relationships: Producers-Make their own food with photosynthesis Mice- eat grasses, grasshoppers Grasshoppers- eat grasses Rabbits- eat grasses Snakes- eat mice, grasshoppers Foxes- eat rabbits, mice Hawkes- eat snakes, rabbits and mice Decomposers (mushrooms and bacteria)- eat dead plants and animals

Name the five kingdoms. (5 marks) 1._____________________________ 2._____________________________ 3._____________________________ 4._____________________________ 5._____________________________ Define the following as either biotic or abiotic factors: (2 marks)

Factor Biotic or abiotic

Light

Competition for food

Temperature

Water

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

__________________________________________________

__________________________________________________ 8. The cane toad was introduced to Australia in 1935. Describe how the cane toad has impacted on the Australian ecosystem by outlining the following points: -Describe how/why they were originally introduced? -Did they solve the problem? -Describe 2 negative impacts it has on the natural ecosystem. (4 marks)

Investigating: Elsa and Anna were conducting an experiment, where they started with a solid ice block, and heated it using a Bunsen burner. They recorded the temperature of the water every minute for 10 minutes. The results are presented in the graph below.

The horizontal line at 100 ° C represents what? (1 mark) _________________________________________________________________________________________________________________________________________________________________________________________________________ The melting point of water is? (1 mark) ______________________________________________________________________________________________________________________________________ What was the independent variable in this experiment? (1 mark) _________________________________________________________________________________________________________________________________________________________________________________________________________ What was the dependent variable in this experiment? (1 mark) _________________________________________________________________________________________________________________________________________________________________________________________________________ Identify two variables which Elsa and Anna could have controlled in this investigation? (2 marks) ______________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________ Kristoff and Olaf want to conduct this experiment to compare results. Using the results table below create a graph to represent the information.

Time (minutes) Temperature (degrees)

0 -10

1 0

2 16

3 29

4 44

5 58

6 72

7 85

8 94

9 101

10 105

(4 marks)