Types of Forces Review

What is a force?

• A force is a kind of material used in construction.
• A force is a measurement of temperature.
• A force causes an object to change its motion. from a push or a pull.

• A force is a type of energy.

What is friction?

• Friction is the attraction between two moons that keeps them together.

• Friction is the energy lost when two surfaces are heated together.
• Friction is when 2 objects contact each other and slide or rub together..

• Friction is the force that causes electricity to generate.

What is normal force?

• Normal force is an object exerting force on another object that is stable and not moving.

• Normal force is the force that pulls objects downwards.
• Normal force is the gravitational force acting on an object.
• Normal force is the frictional force opposing motion.

What is applied force?

• Applied force is the force that resists motion.
• Applied force is the force exerted on an object that is being pushed or pulled.

• Applied force is the force that acts only in a vacuum.
• Applied force is the weight of an object.

Air resistance acts on an object by​​ (a)   , which then​ (b)   .

• pushing against it
• slows it down
• pulling towards it
• speeds it up

Answer the following:

Contact forces are forces that ​ (a)   touch.

Non-contact forces are forces that (b)   touch.

• do
• do not

What is gravitational force?

• When the Earth rises in temperature.

• When two objects are repelled and forced apart.

• When the Earth pushes you away.

• When two objects with mass are attracted to each other.

What is electrical force?

• The electrical force is the force experienced by objects in motion.
• The electrical force is the force between charged particles.
• The electrical force is the force that opposes gravity.
• The electrical force is the force between magnetic fields.

What is magnetism?

• Magnetism is the ability of materials to conduct electricity.
• Magnetism is a type of energy that can be created from heat.
• Magnetism is a phenomenon that only occurs in trees.

• Magnetism is the pushing and pulling of metals from a magnet.