Forces

What is the force that causes objects to fall to Earth?

• Air resistance
• Gravity
• Water resistance
• Pressure

Which of these is NOT a force?

• Friction
• Air resistance
• Water resistance
• Electrical resistance

What is the name of the units that we measure force in?

• Einsteins 
• Newtons
• Kg
• Metres

In which direction does gravity act?

• Downwards
• Upwards
• In all directions
• Towards the centre of the Earth

What force does a parachute use to slow things down before hitting the ground?

• Friction
• Air resistance
• Water resistance
• Wind

When two objects rub together, what force do they produce

• Gravity
• Air resistance
• Friction
• Water resistance

What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

All objects in the universe have a gravitational attraction to each other. 

• True
• False

An _______ force must act on an object for it to CHANGE it's motion

• balanced
• unbalanced
• gravitational
• electrical

Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 

• That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
• That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
• That Jupiter’s and Earth’s gravitational forces are equal.
• Mass has no effect on the gravitational force between two objects