Subjects / JC Science / Nature of Science

Variables and fair testing

Independent, dependent and controlled variables and how to make a test fair.

In review 1st Year2nd Year3rd Year Common

Helps to know first: Scientific investigation and the scientific method

15practice questions

Fill the gaps: 2 · Match the pairs: 1 · Multiple choice: 6 · Select all that apply: 3 · Put in order: 1 · Short answer: 1 · Written answer (self/teacher assessed): 1

Each question has up to three hints, a worked explanation, and is tracked in your progress and review plan.

Practise this topic

Try a question

Read the passage: Investigation: ramp height and distance travelled

A student investigates whether the height of a ramp affects how far a toy car travels along the floor after leaving the ramp. The same car is released (not pushed) from the top of the ramp each time, on the same smooth floor. Each height is tested three times. Ramp height (cm) | Trial 1 (cm) | Trial 2 (cm) | Trial 3 (cm) 10 | 52 | 48 | 50 20 | 98 | 102 | 100 30 | 151 | 149 | 122 40 | 199 | 203 | 201 50 | 248 | 252 | 250

Multiple choiceExam-style long question (Section B style)