Year 7 Science Forces and Simple Machines Revision

The unit for measuring Force (named after a famous Scientist)

• Tesla

• Newton

• Neutron

• Sheldon

In physics, a force is defined as...

• A hop, skip and jump

• A push or pull

• A hit or a swing

• What gives a Jedi his power

Which of the following is a contact force?

• Magnetic

• Friction

• Electrical

• Gravitational

A bar magnet has a magnetic field around it. The field lines are shown without arrows. In which direction should the arrows on the lines be pointing?

• Up

• Down

• Out of the North pole, in to the South pol

• Out of the South pole, into the North pole

Given this arrangement of magnets, in which case/s would the magnets REPEL each other?

• B only

• B and C

• A and C

• A only

True or False: My weight on Jupiter is the same as my weight on Earth?

• True

• False

Which of the forces in this image is the smallest?

• A

• B

• C

• D

• E

True or false: 1 kilogram of feathers on Earth has the same mass as 1 kilogram of feathers on the moon?

• True

• False

The girl's hair is attracted to the balloons because of which force?

• Electrostatic

• Magnetic

• Friction

• Buoyancy

What is the electric charge of an electron?

• neutral

• positive

• affirmative

• negative