Yr 7 Forces & States HWK

What is the name given to a force that opposes motion?

(oppose means that it acts in the opposite way)

• Friction

• Gravity

• Magnetism

• Tension

Which of these forces is an example of a contact force?

• Magnetism

• Gravity

• Electromagnetic force

• Friction

To calculate the resultant force, what operation would we use?

• Addition

• Subtraction

• Multiplication

• Division

What is the total resultant force in this diagram?

• 15N left

• 15N right

• 30N right

• 45N right

Which operation would we use to calculate the resultant force?

• Division

• Multiplication

• Subtraction

• Addition

What is the resultant force in this diagram?

• 10N right

• 10N left

• 30N right

• 30N left

If the resultant force on an object is 0N (the forces are balanced) what three options can describe what the object will do?

• Get faster

• Get slower

• Keep doing what it was already doing

• Stay still

• Move at a constant speed

If the resultant force on an object is above 0N (the forces are unbalanced) what three options can describe what the object will do?

• Get faster

• Get slower

• Keep doing what it was already doing

• Stay still

• Move at a constant speed

Which of the following is a change of state from solid to liquid?

• Condensation

• Evaporation

• Melting

• Sublimation

According to the particle theory, what happens to the particles in a substance when it is heated?

• They move slower

• They move faster

• They change shape

• They disappear