energy

Everyday

1. The strength and liveliness to be active: "I have lots of energy." tree →
2. In science, what is needed to make things move, heat up, light up or change. tree →
3. Power from fuel, electricity, the sun or wind: "solar energy". tree →

In the lessons

In science, energy comes in forms (heat, light, sound, movement, electrical, stored chemical energy in food and fuel); it cannot be made or destroyed, only changed from one form to another. Food gives our bodies energy. Renewable energy (sun, wind, water) won't run out. Phrases: save energy, solar energy, energy drink, full of energy, renewable energy.

Examples

• Food gives us energy. tree →
• The kids are full of energy. tree →
• Solar panels turn sunlight into energy. tree →
• Turn off lights to save energy. tree →
• A moving car has energy. tree →
• Wind energy is renewable. tree →
• I had no energy after the long walk. tree →
• Plants get energy from the Sun. tree →
• Still, she was full of courage and energy, and determined that, one way or another, her husband should be saved. tree →

Note

Plural "energies" is rare. Energy is measured in joules or calories (food). "Energy drinks" are not good for children. Energy is not "used up" in science — it changes form, often into heat.

In Jewish tradition

In science, energy comes in forms (heat, light, sound, movement, electrical, stored chemical energy in food and fuel); it cannot be made or destroyed, only changed from one form to another. Food gives our bodies energy. Renewable energy (sun, wind, water) won't run out. Phrases: save energy, solar energy, energy drink, full of energy, renewable energy.

Note

Plural "energies" is rare. Energy is measured in joules or calories (food). "Energy drinks" are not good for children. Energy is not "used up" in science — it changes form, often into heat.