Science Teacher final revision

Four factors used to measure motion

• Time

• Distance

• Speed

• Direction

• Jumping

How does statistician use motion in their work?

• Collect data about the speed car

• How car far it can go

• Measure numbers

• Collect cars

Which object needs more force to push ,a washing machine or book ?

• Washing machine need bigger force to push it

• Book needs bigger force to push it

Why washing machine need more force to push it than book ?

Because———

• It is big and heavy

• It is small and light

What is the force that pull object down to the floor ?

• Gravity

• Weight

• Stone

What is the force that reduce speed when an object rub against another ?

• Friction

• Movement

• Gravity

Which surface has low friction?

An ice rink flooring or rubber flooring ?

• Ice rink flooring

• Rubber flooring

Why ice rink flooring has low friction than rubber flooring?

Because

• because it’s a smooth surface

• because it has rough surface

Object with————-charge repel

• Similar

• Different

Objects with similar charges————-

• Repeal

• Attract