Page 3 - sheet 2nd term prim 4_Classical

Delta Modern Language School
Grade 4
Date ......./......./………

• Energy chain shows the path of energy from the sun to the different
devices.

• The energy chain of the hair dryer: -

Sun Gives us Light Converts to Chemical Stored in the Thermal
energy energy wood of trees energy from
burning the

coal

Hair dryer Converts to electrical In the electric +
energy power station
Thermal and kinetic energy
sound Converts to
energy

• Law of conservation of energy: energy is neither created nor

destroyed but it can be changed from one form to another.

• The energy flow in the cell phone.

Electrical energy Stored in the Battery cell phone Light energy
sound energy
in the form of Thermal energy
chemical energy

3