2.0 Academy grade 4

In the battery of a toy car…………. energy changes into electrical energy

• chemical

• sound

• light 

• thermal

It takes several …………for a spacecraft to travel from Earth to Mars.

• seconds

• minutes

• days

• months

Curiosity rover is designed to explore…………….

• Earth planet.           

• Mars planet.

• the Sun.

• the moon

In the hair dryer, the electrical energy is converted into…........and……….energies.

• sound – thermal-kinetic

• kinetic – light-chemical

• thermal – light-chemical

• light – sound-electrical

In the washing machine, the………….. energy changes into kinetic and sound energies.

• light

• electrical

• thermal

• potential

Electric wires are made of…………….

• copper.                        

• paper

• Wood.

• glass

When you use the hand bell, the………. energy changes into sound energy.

• light

• thermal

• kinetic

•  electric

If the……….. energy doesn't go through the electric fan's wire, it will not turn on.

• sound

• electrical

• kinetic

• thermal

While playing a guitar, the………… energy changes into sound energy

• kinetic

• light

• chemical

•  potential

When a piece of coal is burnt, ……………….. energy is produced

• thermal

• kinetic

• sound

• potential.