🔬 Science · Energy

Power: watts and energy per second

Define power as the rate of energy transfer (power = energy ÷ time, measured in watts), and compare energy transfer rates in different everyday contexts

Typical age: 12–13 years

“If your child was comparing a 100 W light bulb with a 10 W LED, could they explain what those numbers mean and calculate how much energy each uses in an hour?”

0 / 4 mastered

Explore graph

Needs first

Energy can't be created or destroyedREQUIRED
Power is the rate of energy transfer — the concept of energy stores and conservation must be understood before rates can be discussed

Unlocks next

This doesn't unlock anything else yet.