Independent, dependent and control variables
5th grade (Year 6 in England) · 16 questions · Common Core: NGSS.SEP 3, NGSS.MS-PS2-2 · England: KS2 Y5–Y6 Working scientifically, KS3 Working scientifically
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Question 1
Investigation: Does the number of cells (batteries) affect how bright a bulb is? Which is the dependent variable (the one you measure)?
- A. height of the cress
- B. brightness of the bulb
- C. number of cells
- D. type of bulb
Question 2
Investigation: Does the number of cells (batteries) affect how bright a bulb is? Which is a control variable (one you keep the same)?
- A. distance the car travels
- B. type of bulb
- C. brightness of the bulb
- D. number of cells
Question 3
Investigation: How does exercise affect heart rate? Which is the independent variable (the one you change)?
- A. the same person
- B. heart rate (beats per minute)
- C. mass of the bob
- D. minutes of exercise
Question 4
Investigation: How does exercise affect heart rate? Which is the dependent variable (the one you measure)?
- A. time for the water to evaporate
- B. the same person
- C. minutes of exercise
- D. heart rate (beats per minute)
Question 5
Investigation: How does the amount of light affect the growth of cress? Which is a control variable (one you keep the same)?
- A. amount of light
- B. time for the water to evaporate
- C. type of soil
- D. height of the cress
Question 6
Investigation: How does the amount of light affect the growth of cress? Which is the independent variable (the one you change)?
- A. amount of light
- B. amount of water
- C. height of the cress
- D. water temperature
Question 7
Investigation: How does the height of a ramp affect how far a toy car travels? Which is the dependent variable (the one you measure)?
- A. the same car
- B. distance the car travels
- C. time to fall
- D. height of the ramp
Question 8
Investigation: Does the temperature of water affect how quickly sugar dissolves? Which is a control variable (one you keep the same)?
- A. water temperature
- B. time for the sugar to dissolve
- C. volume of water
- D. time for one swing
Question 9
Investigation: Does the size of a parachute affect how long it takes to fall? Which is the independent variable (the one you change)?
- A. time to fall
- B. size of the parachute
- C. drop height
- D. height of the ramp
Question 10
Investigation: Does the size of a parachute affect how long it takes to fall? Which is the dependent variable (the one you measure)?
- A. time to fall
- B. mass hanging from it
- C. time for one swing
- D. size of the parachute
Question 11
Investigation: How does exercise affect heart rate? Which is a control variable (one you keep the same)?
- A. heart rate (beats per minute)
- B. distance the car travels
- C. minutes of exercise
- D. type of exercise
Question 12
Investigation: How does the height of a ramp affect how far a toy car travels? Which is the independent variable (the one you change)?
- A. height of the ramp
- B. distance the car travels
- C. mass of the bob
- D. the same car
Question 13
Investigation: Does the temperature of water affect how quickly sugar dissolves? Which is the dependent variable (the one you measure)?
- A. volume of water
- B. brightness of the bulb
- C. water temperature
- D. time for the sugar to dissolve
Question 14
Investigation: Does the number of cells (batteries) affect how bright a bulb is? Which is a control variable (one you keep the same)?
- A. brightness of the bulb
- B. distance the car travels
- C. type of bulb
- D. number of cells
Question 15
Investigation: How does the mass of a pendulum bob affect the time of one swing? Which is the independent variable (the one you change)?
- A. starting angle
- B. height of the ramp
- C. time for one swing
- D. mass of the bob
Question 16
Investigation: How does the height of a ramp affect how far a toy car travels? Which is the dependent variable (the one you measure)?
- A. brightness of the bulb
- B. the same car
- C. height of the ramp
- D. distance the car travels
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