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Planning a fair test

3rd grade (Year 4 in England) · 16 questions · Common Core: NGSS.SEP 3, NGSS.3-PS2-1 · England: KS2 Y3–Y4 Working scientifically

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Date

Score/ 16

1
Question 1
Fair tests: which statement is true?
- A. In a fair test you change only one thing.
- B. A fair test means everyone gets a turn.
- C. You should change as many things as possible.
- D. If a result surprises you, you should hide it.
2
Question 2
Why is it a good idea to repeat a test several times?
- A. Because the first try never counts
- B. To check the results are reliable
- C. To change the answer
- D. To make the test unfair
3
Question 3
Which question can be answered with a fair test?
- A. Does a heavier parachute fall faster?
- B. What is your favourite plant?
- C. Is a rainbow beautiful?
- D. Who is the best scientist?
4
Question 4
Fair tests: which statement is true?
- A. If a result surprises you, you should hide it.
- B. In a fair test you change only one thing.
- C. You should change as many things as possible.
- D. One try is always enough.
5
Question 5
Mateo wants to know if plants grow better with more light. Which plan is fair?
- A. Different plants, different water, different light
- B. Same light for every plant
- C. Same plant type, same water, different amounts of light
- D. More water for the plant in the light
6
Question 6
Aisha measures how fast sugar dissolves in water at different temperatures. What does she measure?
- A. the time for the sugar to dissolve
- B. the type of cup
- C. the colour of the sugar
- D. the temperature of the water
7
Question 7
Fair tests: which statement is true?
- A. One try is always enough.
- B. If a result surprises you, you should hide it.
- C. You should keep everything else the same.
- D. A fair test means everyone gets a turn.
8
Question 8
Isla tests which ball bounces highest. She drops one ball from 1 m and another from 2 m. What is wrong?
- A. The drop height should be the same
- B. She should not measure the bounce
- C. Nothing, it is fair
- D. She should use only one ball
9
Question 9
Ben tests whether salt water or tap water freezes faster. Which must he keep the same?
- A. the volume of water in each cup
- B. the type of water
- C. whether the water has salt
- D. the time each one takes to freeze
10
Question 10
Fair tests: which statement is true?
- A. You should change as many things as possible.
- B. A fair test means everyone gets a turn.
- C. One try is always enough.
- D. You should keep everything else the same.
11
Question 11
Isla tests which ball bounces highest. She drops one ball from 1 m and another from 2 m. What is wrong?
- A. The drop height should be the same
- B. She should use only one ball
- C. Nothing, it is fair
- D. She should not measure the bounce
12
Question 12
Which question can be answered with a fair test?
- A. Does a heavier parachute fall faster?
- B. What is your favourite plant?
- C. Who is the best scientist?
- D. Is a rainbow beautiful?
13
Question 13
Fair tests: which statement is true?
- A. If a result surprises you, you should hide it.
- B. A prediction says what you think will happen.
- C. A fair test means everyone gets a turn.
- D. One try is always enough.
14
Question 14
Mateo wants to know if plants grow better with more light. Which plan is fair?
- A. Same plant type, same water, different amounts of light
- B. Same light for every plant
- C. Different plants, different water, different light
- D. More water for the plant in the light
15
Question 15
Ben tests whether salt water or tap water freezes faster. Which must he keep the same?
- A. the time each one takes to freeze
- B. whether the water has salt
- C. the type of water
- D. the volume of water in each cup
16
Question 16
Fair tests: which statement is true?
- A. A fair test means everyone gets a turn.
- B. You should change as many things as possible.
- C. Repeating a test helps you check your results.
- D. If a result surprises you, you should hide it.

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