Cambridge Checkpoint Maths 0846-01 Science 2019 Time Allowed 45 minutes Science send to send to David at david.perkins81@googlemail.com or Osaye at osa7mak@gmail.com by June 18, 5pm

Instructions: If possible, please let your child complete this exam on a computer/laptop. Once the exam

is finished, please save this in the name of your child and email it to your child’s subject teacher. If it is not possible to do the exam on a computer, use a paper to answers the questions

and take a photo of the answer pages. You do NOT need to write out the questions.

Materials allowed: ruler, calculator

1. Insects are useful for flowers.

What is the insect doing to the flower? Bold or underline the correct answer. [1]

dispersing the flower germinating the flower making seeds for the flower pollinating the flower

2. Some materials conduct electricity. Bold or underline two materials that conduct electricity. [2]

copper glass iron paper plastic sand wood

3. Hassan owns a motor car. Put each material in the table in the correct column to show if it is a solid, a liquid or a gas at room temperature. [2]

material solid liquid gas

air

gasoline

iron

plastic

rubber

4. Class 5 have a quiz about the Earth. Write down the answers to the questions. [2]1. What is the name of the Earth’s path around the Sun? Answer: 2. How many days does it take the Earth to go around the Sun once? Answer: 3. The Earth is also moving on its own axis. What word describes this movement of the Earth? Answer:

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5. Anastasia cooks potatoes in hot water.

She puts the cooking pot over a flame and heats the water for 25 minutes. (a) What happens to water when it is boiling? [1]Answer:

(b) Explain why boiling water is a reversible change. [1]Answer: (c) Explain why cooking a potato is an irreversible change. Answer:

6. Angelique makes a musical instrument.

She blows between the two large sticks.This makes a sound with a steady pitch.Angelique makes the musical instrument again.This time she uses shorter sticks and blows harder.

Complete the sentences. [2]When she blows harder between the sticks the sound is (answer) …When she uses shorter sticks the sound is (answer) …

7. The diagram shows some organs of the body.

(a) Which letter is the liver? [1]Answer:

(b) Which letter shows the organ that filters the blood? [1]Answer:

(c) Explain why the body needs organ B to stay alive. [2]Answer:

8. The diagram shows a forcemeter.

(a) What type of force is it measuring? Bold or underline the correct answer. [1]

friction push twist upthrust

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(b) The forcemeter points to 3. The force is doubled. What does the forcemeter now point to? [1]Answer:

(c) What is the unit of force? [1]Answer:

9. The picture shows the skeleton of a rabbit. (a) Which organ does part X of the skeleton protect? [1]Answer:

(b) What is the function of the organ that part X protects? [1]Answer:

Complete these sentences.(c) The skeleton protects, moves and (answer) the body. [1]

(d) To move the skeleton there are (answer) attached to the bones. [1]

10. Oliver makes tea.He adds boiling water to the tea leaves. A brown solution is made.

(a) Suggest why the boiling water becomes brown. [1]Answer:

(b) Oliver wants to keep the brown solution but separate it from the tea leaves. He uses sieving.Explain why sieving works. [2]Answer:

(c) Suggest one other way to separate the brown solution from the tea leaves. [1]Answer:

11. Rajiv grows two trays of plants.

He puts one tray in the light. He puts the other tray in the dark. He looks at the trays of plants after 5 days.

(a) Describe two differences between the plants in the light and the plants in the dark. [2]Answer 1:Answer 2:

(b) Why does Rajiv put more than one plant in each tray? [1]Answer:

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(c) Why do plants need light? [1]Answer:

12. It is possible to identify a substance from looking at its properties. Here are some properties of six substances.

substance melting point in C

boiling point in C

Is it magnetic?

Is it a good conductor of heat?

A 1470 3010 yes yesB –77 –10 no noC 0 106 no noD 1535 2750 yes yesE 0 100 no noF –20 100 no no

(a) Which two substances could be steel? Choose from A, B, C, D, E or F. [2]Answer letter: Explain your answer:

(b) One of the substances is water. Which substance? [1]Choose from A, B, C, D, E or F. Answer letter:

(c) The temperature in a laboratory is 25C. Which substance is a gas in this laboratory? [1] Choose from A, B, C, D, E or F. Answer letter:

(d) Substance D melts at 1535C. What happens when a substance melts? Answer:

13. A cactus plant lives in the desert.

The cactus plant has features which make it suited to live in the desert. They do not have leaves so they lose less water.

List two other features the cactus plant has.Explain how each feature makes the cactus plant suited to live in the desert. [4]

Answer feature 1: Answer explanation 1:Answer feature 2: Answer explanation 2:

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14. Class 6 investigate light.

A hole is cut in a box. A flashlight (torch) is put inside the box. Different materials are put over the hole

in the box.

(a) Predict what will happen if the material is opaque. Complete the sentence. [1]If the material is opaque I predict (answer) …

(b) Which material is opaque? Bold or underline the correct answer. [1]

glass ice water wood

15. Look at the diagrams of four electrical circuits.

(a) How many electrical circuits will work? [1]

0 1 2 3 4

Answer:

(b) Leave this part

16. Yuri investigates how much salt dissolves in water. He predicts that the hotter the water, the more salt will dissolve. Here are his results.

(a) Yuri forgets to put the unit for mass in the table. What is the unit for mass?Answer:

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temperature of water in °C mass of salt dissolved in ....

10 2720 2930 3140 3350 3560 37

(b) Yuri uses 100 cm3 of water for each temperature of water. Explain why. [1]Answer:

(c) Yuri’s friend suggests he repeat the experiment. Why is this a sensible suggestion? [1]Answer:

(d) Yuri predicted that the hotter the water, the more salt would dissolve. Do Yuri’s results agree with his prediction?Answer Yes or No: Explain your answer using information from the results table. Answer:

(e) Yuri decides to present his results. Which would be the best way? Bold or underline the correct answer. [1]

a pie chart a bar charta line grapha labelled diagram

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