Devices and Energy

Toy cars need energy to do all the following functions except…..

• a. moving forward and backward
• b. rotation in a circle
• c. moving right and left
• d. rotation around the moon

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

• a. chemical
• b. sound
• c. light
• d. thermal

Electrical energy produced from a toy car battery can be converted into …..,…..and …..energies

• a. mechanical-sound-solar
• b. mechanical -thermal-solar
• c. mechanical - sound -thermal
• d. sound - thermal - solar

The energy source in a toy car is the ……….

• a. engine
• b. battery
• c. tires
• d. fuel

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

• a. seconds
• b. minutes
• c. days
• d. months

Curiosity rover is designed to explore…….

• Earth
• Mars
• the Sun
• the moon

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

• a. sound-thermal-kinetic
• b. kinetic - light-chemical
• c. thermal-light-chemical
• d. light-sound-electric

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

• light
• electrical
• thermal
• potential

You feel warm when you rub your hand together , because ……energy is sonverted into thermal energy

• kinetic
• light
• sound
• electrical

Plants can convert the light energy from the sun into……energy which is stored in the plant in the formof sugar

• a. sound
• b. electrical
• c. chemical
• d. kinetic