Types of Forces Review - Step 4

What is gravity?

• A force that pushes objects away from each other.

• A force that pulls objects toward each other, such as the Earth pulling us down.

• A type of energy that causes objects to move in circles.

• A phenomenon that only occurs in space.

What is friction?

• A force that accelerates the motion of two surfaces in contact.

• A force that opposes the motion of two surfaces that are in contact.

• A type of energy generated by moving objects.

• A measure of the speed of an object in motion.

What is a balanced force?

• Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

• Balanced forces are unequal in size and act in the same direction, causing acceleration.

• Balanced forces are forces that do not act on an object at all, resulting in no motion.

• Balanced forces are forces that are equal in size and act in the same direction, causing a constant speed.

What does friction cause?

• It makes things slow down or stop.

• It makes things speed up.

• It has no effect on motion.

• It changes the direction of motion.

Friction is a force created by-----

• rubbing

• pulling

• pushing

• lifting

What is air resistance?

• A force that propels an object forward through the air.

• A force that opposes the motion of an object through the air.

• A type of friction that occurs on solid surfaces.

• A gravitational force acting on objects in the atmosphere.

What is an unbalanced force?

• Unbalanced forces are equal in magnitude and direction.

• Unbalanced forces can cause an object to start moving, stop moving, or change direction.

• Unbalanced forces always act in pairs and cancel each other out.

• Unbalanced forces are only present when an object is at rest.

What is a force?

• A force is a push or pull that can change the motion of an object.

• A force is a type of energy that can be stored.

• A force is a measurement of an object's mass.

• A force is a reaction that occurs only in living organisms.

What are the two main types of forces?

• Frictional forces and gravitational forces.

• Contact forces and non-contact forces.

• Magnetic forces and electrical forces.

• Tension forces and normal forces.

What is an example of a non-contact force?

• The gravitational pull between the Earth and the Moon.

• Friction between two surfaces.

• The tension in a rope during a tug-of-war.

• The normal force acting on a book resting on a table.