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