Page 3 - sheet 2nd term prim 4_Classical
P. 3
Delta Modern Language School
Grade 4
Date ......./......./………
Important points on Unit (3) Concept 3.1
Devices and Energy
*Sun is the main source of energy on earth.
*Chemical energy stored in the battery is converted to kinetic energy to
move the remote-controlled car.
*Mars rover curiosity is used to explore Mars.
*Mars rover gets energy from long term batteries and solar cells.
Energy transforming in some devices
Input energy Input energy Output energy
Device name •Electrical energy Output energy
Hair dryer
• Thermal, sound and
Washing machine kinetic
•Electrical energy • Kinetic and sound
Soap dispenser
• Potential energy •Kinetic energy
2
