Standard Science Primary 6 Interactions

Ravi conducted an experiment to find out how the angle of a ramp affects the force needed to pull a block up. Which variable must be kept constant?

A The angle of the ramp
B The mass of the block
C The height of the ramp
D The force used to pull the block
Show Worked Solution

Worked Solution

Step 1: To ensure a fair test, only the independent variable (ramp angle) should change. Step 2: All other variables that could affect the force, such as the surface of the ramp and the mass of the block, must stay the same.

Correct answer: The mass of the block

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free