Forms of Energy
What is energy?
The ability to do work or cause change
What does energy transfer mean?
Movement of energy from one object to another
What happens when light hits a dark surface?
It is absorbed and changes to heat
What is motion?
Change in position over time
What is electrical energy?
Energy from moving electric charges
Name three forms of energy.
Light, heat, and sound (teacher must approve answers)
Give an example of energy transfer.
Heat moving from a pot to water (teacher must approve answers)
Give an example of energy changing from electrical to light.
A lamp turning on (teacher must approve answers)
Name one way to measure motion.
Speed or distance (teacher must approve answers)
Name one source of electrical energy.
Battery or power plant (teacher must approve answers)
What form of energy does the Sun provide?
Light and heat
How does energy transfer when you rub your hands together?
Through friction as heat
What happens when you eat food?
Chemical energy changes to motion and heat
What happens to motion when force is applied?
It changes speed or direction
What happens when electrical energy flows through a wire?
It creates a current
Explain why energy is important for living things.
It helps them grow and move
Explain how energy moves in a food chain.
From producers to consumers
Explain how energy changes in a toaster.
Electrical energy changes to heat
Explain how friction affects motion.
It slows objects down
How does electrical energy change in a light bulb?
It changes to light and heat
Give an example of energy in everyday life.
Heat from a stove cooking food
Why does a metal spoon feel hot in boiling water?
Heat transfers from water to spoon
Why do we need energy changes?
To use energy in different ways
Why does a ball stop rolling on the ground?
Friction and gravity
Why is copper used in wires?
It is a good conductor of electricity