Standard Science Primary 4 Energy

Luke wants to find out if the amount of water affects how fast it boils. Which variable must he keep the SAME?

A The amount of water
B The time taken to boil
C The size of the beaker used only
D The starting temperature of the water
Show Worked Solution

Worked Solution

Step 1: To test the effect of the amount of water, that must be the only thing that changes. Step 2: Starting temperature, heat source, and container type must be kept constant. Step 3: This ensures a fair test.

Correct answer: The starting temperature of the water

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

Start Free Trial — 7 Days Free