Energy and its changes
Answers are for parents and teachers.
1
Write 5 electrical devices at home and what energy each changes electricity into.
For example: lamp — light; kettle — heat; fan — motion (mechanical)
2
Draw an energy chain: Sun → plant → human.
Sunlight → the plant makes food → the person eats it and gets energy.
3
Write in 2 sentences what energy your body uses during sport or play.
Muscles change food energy into movement and heat.
4
Write 3 tips for saving energy.
Switch off lights, close doors, do not overheat.