Both hair dryer and electric water kettle produce ...........energy.
thermal
light
Kinetic energy doesn't affect by the ..........
color
Mass
When you use the hand ball, the ....energy changed into sound energy.
kinetic
electrical
All the following are found deeply under earth's surface except ......
coal
green plant
Hydroelectric energy is generated from .........
waterfalls and dams
biofuel and fossil fuel
When a piece of coal is burnt, .......... Energy is produced.
Potential
When the car fuel completely runs out, then the car's ...... becomes zero.
speed
Electric wires are made of .............
copper
wood
.......... is considered as the main resource of energy on Earth's surface.
Natural gas
The sun
To keep playing with the toy car, we have to .............. the batteries.
replace
heat
The car needs ........... to move.
water
fuel
When objects crash with each other, then .......transfers between them.
Distance
energy
The big truck needs .... Engine.
Big
small
In a battery of a toy car ........... energy changes into electrical energy.
sound
chemical
When the car stops suddenly, the passengers move .........
backward
Forward
Curiosity rover is designed to explore .........
Mars planet
The Moon
Coal is a type of fuel, which is used in all the following purposes except ...........
warming houses
operating TV
When you turn on a light bulb, the electrical energy travels through .......... until reaching the bulb.
plastic
wires
The produced ...... energy doesn't help the blender do its job.