EASY
Lower Secondary Stage 9
IMPORTANT
Earn 100

Mandeep decided to investigate how much pressure will exert on different shoes.

Shoes do not have a regular shape. What could Mandeep do to work out their area?

Important Questions on Moments, Pressure and Density

EASY
Lower Secondary Stage 9
IMPORTANT
Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 10 - Moments, Pressure and Density>End of Chapter Review>Q 12
Explain why snowshoes help people to walk over snow without sinking into it.  
EASY
Lower Secondary Stage 9
IMPORTANT
Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 10 - Moments, Pressure and Density>End of Chapter Review>Q 13
When gases become hot, their particles move further apart. Explain why hot air balloons float. 
EASY
Lower Secondary Stage 9
IMPORTANT
Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 10 - Moments, Pressure and Density>End of Chapter Review>Q 14

Cranes have counterweights. Use the diagram to explain why the counterweighs must more than the load. 

Question Image