Standard Science Primary 4 Energy

Two identical beakers, X and Y, were wrapped in different materials and placed in the sun. After 30 minutes, the water in Beaker X was hotter. What could be the materials used?

A X: Black cloth; Y: White cloth
B X: Glass; Y: Wood
C X: Plastic; Y: Metal
D X: White cloth; Y: Black cloth
Show Worked Solution

Worked Solution

Step 1: Darker colors absorb heat better than lighter colors. Step 2: Beaker X is hotter, so it must have absorbed more heat from the sun. Step 3: Therefore, X is likely wrapped in a dark material like black cloth.

Correct answer: X: Black cloth; Y: White cloth

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

Start Free Trial — 7 Days Free