Unit 1 Energy and Forces Review

Front

What is energy?

Back

Energy is the ability to do work or cause change. It exists in various forms, such as kinetic, potential, thermal, and chemical energy.

Front

Can energy be transferred?

Back

Yes, energy can be transferred from one object to another, such as when heat moves from a hot object to a cooler one.

Front

What is a force?

Back

A force is a push or pull that can cause an object to accelerate, change direction, or change shape.

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction. This means that forces always occur in pairs.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is stored energy based on an object's position or state, such as gravitational potential energy.

Front

What happens when a book is placed on a table?

Back

The table applies an upward force equal to the weight of the book, balancing the downward gravitational force.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as weight = mass × gravity.

Front

What is an example of energy transformation?

Back

When a battery powers a flashlight, chemical energy in the battery is transformed into electrical energy, which is then converted into light energy.

Front

What is friction?

Back

Friction is a force that opposes motion between two surfaces in contact, often converting kinetic energy into thermal energy.