Gravity and friction
Answers are for parents and teachers.
1
Drop a safe object from a low height and explain why it falls.
Because of the Earth’s gravity.
2
Write 2 cases each where friction helps and where it harms.
Helpful: walking, braking. Harmful: parts wearing and heating.
3
Rub your hands together and write what you feel.
Hands get warm.
4
Why is sand spread on roads in winter?
To increase friction and stop slipping.