The energy that is produced from the battery and used to operate a toy car is ........... energy.
electrical
thermal
kinetic
Coal and ............can be used in electric power stations to generate electricity.
wood
oil
water
The big truck needs .... engine.
small
big
In electric heater, .......... Energy is considered as an input energy , while thermal energy is considered as .......... energy.
electrical , input
thermal , output
electrical , output
We can use some forms of fuel such as ..........and ...........in warming houses.
charcoal , wood
oil , wood
charcoal , oil
During a car crash, the ......... is inflated with a gas
wrecking ball
airbag
seatbuilt
Engineers try to reduce the weight of the solar vehicles to increase its ........
direction
speed
mass
To operate an electric mixer we use ............. energy.
The speed of .......... vehicles is slower than that of normal vehicles.
sun
solar
As a result of hitting the ball with the bat, the direction of the ball will ...............
be stop
change to same direction
change to opposite direction
When objects crash with each other, then .......transfers between them.
energy
distance
When the car stops suddenly, the passengers move .........
backward
forward
When the mass of a moving object decreases, its kinetic energy............at the same speed.
decrease
increase
The energies that are produced from the washing machine are .....energy and .............energy.
chemical, sound
kinetick , sound
kinetick , chemical
The electric lamp converts ........ energy into light and heat energy.
The energy can be .......... from one form to another.
converted
decreases
increases
The mobile phone converts chemical energy stored in its batteries into .......energy and ............. energy.
sound, light
light , sound
heat, light
In any energy chain, some of the energy is lost in the form of ...........
heat
sound
When you ride a bicycle, the ........energy stored in your body is converted into .......... energy which causes the bicycle to move.
thermal , kinetic
chemical , thermal
chemical , kinetic
............ is example of biofuel, while ...............is example of fossil fuel.
wood, coal
coal , wood