G4 unit 5 unit test

Name the forces acting on this sailing boat

• a Upthrust

  b Gravity

  c Air resistance

  d Applied force

• a Gravity

  b Upthrust

  c Applied force

  d Air resistance

• a Applied force

  b Upthrust

  c Gravity

  d Air resistance

• a Upthrust

  b Gravity

  c Applied force

  d Air resistance

Name the force which keeps a satellite in an orbit.

• Air resistance

• Gravity

• Magnetic force

• Normal gorce

  Give an example for artificial satellite.

• saturn

• Earth

• International space station

• Moon

A force between two surfaces trying to slide past each other.

• Gravity

• Friction

• Normal force

• Applied force

 A material with an area around it where magnetic force is active.

• Iron

• Wood

• Steel

• Magnet

Suggest a way to overcome friction

• Make surface rough

• Remove lubrication in surface

• Streamline shape

Which are the two types of friction.

• Gravitational force

• Air resistance

• Water resistance

• Upthrust

Name a force that pulls everything towards earth.

• Normal force

• Gravity

• Applied force

• Drag

Which of the following are magnetic materials.

• Iron

• Aluminium

• Nickel

• Stainless steel

• cobalt

Draw force diagram of a moving boat