iStarSign inScience 5 · Unit 5: Forces and magnetism · Cambridge Primary Science Stage 5
5.1 Gravity, normal forces and applied forces
16 questions · e.g. What is a normal force?
Questions
1. Is gravity a push or a pull?
Check- a force that pulls objects to Earth
- the force of a magnet
- a support force that pushes up on an object resting on something
- a push from a person
3. A book rests on a table. Which force pulls it down?
Check4. A book rests on a table. Why doesn't it fall?
- The table pushes up with a normal force.
- There is no gravity on tables.
- Air holds it up.
- The book is magnetic.
5. How do we show a force on a force diagram?
Check6. What does the direction of the arrow show?
Check7. On a force diagram, how do we show that two forces are equal?
- The arrows point the same way.
- There are no arrows.
- The arrows are different colours.
- The arrows are the same size.
- a support force from a table
- the force between magnets only
- a push or pull applied by a person or object
- the force of gravity
9. Marcus pushes a table. What kind of force is this?
Check10. Zara pulls a door towards her to close it. What kind of force is this?
Check11. When you stand still, why don't you sink into the ground?
- The ground pushes up with a normal force equal to gravity.
- There is no gravity when you stand still.
- The air holds you up.
- Your shoes float.
12. Zara pushes down on her bike pedals. What does this applied force do?
Check13. A person is sitting on a chair. Which two forces act on them?
Check14. Without gravity, what would happen if you kicked a ball?
Check15. Does gravity act on objects that are at rest?
Check16. Marcus hits a cricket ball with a bat. What kind of force is this?
Check