Name: _______________________________________________________

Yr. 7 Science Exam Multiple Choice Answer Sheet

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

YEAR 7 SCIENCE

EXAMINATION - SEMESTER 1, 2019

MULTIPLE-CHOICE - PART A

AND WRITTEN ANSWERS - PART B

STUDENT NAME:

TEACHER NAME:

DATE:

MARKS ALLOCATION

Topic Section Marks

Chemical Science Multiple Choice /8

Short Answer questions /24

Earth and Space Science Multiple Choice /8

Short Answer questions /24

Total 64

USE ATTACHED ANSWER GRID FOR MULTIPLE CHOICE

TIME ALLOWED FOR THIS EXAM:

• 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 booklet

To be provided by the candidate: - Pens, pencils, eraser and ruler - 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, Part A and Part B, to familiarise yourself with all the questions. 2. Use a blue or black ballpoint / ink pen for written answers. Use pencil for drawing the graph. 3. Write your answers in the booklets. 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.

1. In the laboratory do NOT:

A. run or push others roughly.

B. wash your hands after experiments.

C. tie long hair back.

D. keep workbooks away from heating equipment or flames.

2. When liquid water is cooled down, it turns to ice. This process is called:

a. precipitation.

b. melting.

c. condensation.

d. freezing.

3. When a large amount (but not the maximum amount) of a solute is dissolved in a solvent, the

solution is called:

A. a suspension.

B. concentrated.

C. saturated.

D. diluted.

4. Muddy water looks murky because:

a. the mud particles are soluble.

b. the mud particles are spread out and suspended in the water.

c. mud is dirty.

d. the mud particles have been pulled apart and spread through the water.

5. If your book gets wet the ink on the pagers will separate into lots of different colours. This is an

accidental example of:

a. Decanting

b. Filtering

c. Chromatography

d. Centrifuging

6. Which of the following is NOT a branch of Science?

a. Biology

b. Chemistry

c. Astrology

d. Physics

7. Meteorologists are scientists who study:

A. The weather

B. Energy.

C. Living things

D. Chemical reactions.

8. Which technique would allow you to collect clear water from muddy water?

a. Magnetic separation

b. chromatography

c. filtering

d. evaporation

9. Which of the following statements is correct?

a. the amount of water on Earth does not change b. the amount of water on Earth is constantly changing c. not all water is a part of the water cycle d. water evaporated into our atmosphere comes mainly from lakes and rivers

10. How does water travel through plants?

a. Plants take water in through their roots. This water travels through the plant to the leaves where it can condense.

b. Plants take water in through their roots. This water travels through the plant to other plants where it can evaporate.

c. Plants take water in through their roots. This water travels through the plant to the leaves where it can evaporate.

d. Plants take water in through their leaves. This water travels through the plant to other leaves where it can evaporate.

11. In Australia we generate most of our energy from coal, gas, petroleum and other fuels found:

a. in major city centres. b. in rain water. c. in the air. d. underground.

12. Resources on Earth can be classified into 2 groups:

a. metal and non-metal. b. resourceful and non-resourceful. c. renewable and non-renewable. d. mineral and non-mineral.

13. What do coal-fired power stations do?

a. generate gas by converting the stored energy in coal b. generate electricity by converting the stored energy in coal c. generate geothermal power by converting the stored energy in coal d. generate heat by converting the stored energy in coal

14. Which of the following statements is true about the formation of coal?

a. provided there is not too much pressure and heat, coal can be formed b. with pressure and nothing else, coal is formed c. with pressure and heat, coal is formed d. in freezing conditions, coal is formed

15. As the Earth moves around the Sun it _________ on its axis.

a. flips b. spins c. orbits d. wobbles

16. When the Moon blocks light from the Sun, this is known as:

a. a lunar eclipse. b. a Moon eclipse. c. planet eclipse. d. a solar eclipse.

Section 2: Part A – Chemical Sciences

1. Mixing salt and water creates a solution, while mixing chalk and water creates a suspension

a. Describe what each mixture would look like by underlining the correct answer: Salt and water solution would look:

Clear / Cloudy

Chalk and water suspension would look:

Clear / Cloudy (2 marks)

b. Explain the difference in how they look

(3 marks)

2. Name 3 pieces of safety equipment found in a Science laboratory and explain what they are used for:

(3 marks)

Safety equipment How it keeps you safe

3. Salt water freezes at a lower temperature than fresh water. In some cold countries, salt is

spread over footpaths in winter. Why would they do this?

(5 marks)

4. James has a beaker of very cloudy water. He adds a chemical called aluminium sulphate to it and finds that the water quickly clears. The aluminium sulphate has acted as a flocculant. How do flocculants work to clear cloudy suspensions?

(3 marks)

5. Andrea is shipwrecked on a desert island with no source of fresh water. Washed up on the

beach she finds: a metal bottle, a plastic bottle, lots of wood, a length of tubing, some old

towels and a box of dry matches. Use your knowledge of separating techniques to

describe how she could use all of these items to make fresh water to drink. You may draw

a labelled diagram if you wish.

(8 marks)

Section 2: Part A – Earth and Space Sciences

6. Mrs Sedgeman has received a very expensive water bill and has decided she needs to reduce water usage around her home. Suggest 2 things she could do to reduce her water usage and describe how they would help:

Idea 1:

Idea 2:

(2 marks)

7. Below is a simplified diagram of the water cycle:

The water cycle involves the processes of: evaporation, condensation, transportation,

precipitation, transpiration, infiltration and run-off. In some of these processes, water moves

from one place to another, while, in others, water changes from one state to another.

Complete the table by writing the names of the processes in the correct columns below. The first

one has been done for you.

Same state, just changes place

Changes state from Liquid to Gas

Changes state from Gas to Liquid

evaporation

(3 marks)

8. Fossil fuels (coal, oil and gas) are regularly used as energy sources in Australia. a. Give one advantage of fossil fuels as energy sources

__________________________________________________________________________

b. Give 2 disadvantages of fossil fuels as energy sources

(3 marks)

9. Mr Steel is a farmer. If he tries to grow oats in the same field every year, he gets less and less oats produced. a. Explain why less grows and why, in this situation, soil is a non-renewable resource.

(3 marks)

b. Every few years Mr Steel doesn’t plant oats in the field, he lets the grass grow and puts a herd of cows in the field instead. How would this help to “renew” the soil?

(2 marks)

10. Aidan suggests to Noah that the Moon is a mini Sun that shines at night. Is he correct? Explain your answer:

Is he right?

Explanation:

(3 marks)

11. With the use of a labelled diagram, describe the Earth’s orbit around the Sun and explain why Perth (in the southern hemisphere) gets hotter weather in December and colder weather in June, while Dublin (in the northern hemisphere) gets hotter weather in June and colder weather in December.

(6 marks)

12. Kim is going on an expedition to the South Pole in June. He has decided to use solar panels to power his sled. Why is this a bad decision?

(2 marks)

***END OF EXAM***

Name: _______________________ Year 7 Exam

Classification word find Chapter 5

Find and circle each of the words from the list below. Words may appear forwards or backwards,

horizontally, vertically or diagonally in the grid.