3NT Science 1 Energy and its uses

Energy is..

• the capacity to do work.

• the amount of time taken to move an object.

• the ability to power up appliances.

• the power of a person.

Which statement about energy is correct?

• Energy can be destroyed but not created.

• Energy can be destroyed but not created.

• Energy cannot be destroyed but can be created.

• Energy cannot be destroyed nor created.

What is the main energy conversion that takes place when we charge our phone?

• chemical potential energy -> electrical energy

• electrical energy -> chemical potential energy

• chemical potential energy -> heat energy

• electrical energy -> heat energy

What is the energy conversion that takes place when we use our phone?

• chemical potential energy -> kinetic energy

• electrical energy -> chemical potential energy

• chemical potential energy -> light and heat energy

• electrical energy -> heat energy

Lifting a weight increase its _____________.

• chemical potential energy

• light energy

• thermal energy

• gravitational potential energy

A basketball is being thrown into the ring.

The ball will have ____________

• kinetic energy only

• gravitational potential energy only

• both kinetic and gravitational potential energy

• none of the above

Headphones get electrical energy from the device to which they are attached. The headphones change this energy into what other kind of energy?

• thermal

• sound

• light

• kinetic

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

• The total amount of energy is more after a reaction

• The total amount of energy is less after a reaction

• The total amount of energy is conserved

A chromebook has derived its energy from _____________

Hint: There are two answers!

• electrical energy

• kinetic energy

• chemical potential energy

• thermal energy

When a bow is stretched, it has _______________

• chemical potential energy

• gravitational potential energy

• elastic potential energy

• electrical energy