Write the scientefic term : The output energy in the electric iron.
Thermal energy
Write the scientefic term : energy stored in the batteries
Chemical energy
Complete : When batteries run out, we must - - - - - - - them.
Recharge or replace
Write the scientefic term : it is the main source of energy on Earth
The sun
Which of the following statements is correct? a. Energy can't be changed from one form to another. b. Energy can be changed from one form to another. c. Energy may be lost or destroyed. d. Energy can be created.
B
Wtite the scientefic term : Energy produced due to friction
Thermal energy
Arrange the energy chain in the picture :
1 solar energy 2 chemical energy 3 kinetic energy
Arrange the energy chain in the mobile phone :
1 sun 2 cutting trees 3 coal 4 electric power stations 5 battery in the mobile 6 light and sound
Arrange energy chain in heat a water pot :
1 sun 2 cutting trees 3 burning wood
Complete : energy chains start with - - - - - -
The sun
What is meant by : Law of conservation of energy
Energy cannot be created or destroyed, but it can change from one form to another.
Complete : solar panels change - - - - - ( energy to - - - - energy
Solar energy to electric energy
True or false : the input energy in solar panels is electric energy
False ( solar)
The most famous robot sent to Mars is called - - - - - - - -
Curiosity Rover
True or false : kinetic energy produced from the hair dryer is wasted energy
False ( sound energy is wasted energy)
Write the scientefic term : Energy produced from the electric lamp and affects our eyes.
Light energy
