Transfer of Energy
What is energy transfer?
Movement of energy from one object to another
What is electrical energy?
Energy from moving electric charges
What is a circuit?
A path for electric current
What is motion?
Change in position over time
What is a force?
A push or pull
Give an example of energy transfer in everyday life.
Example: Heat from stove to pot. (teacher check for other answers.)
Name one source of electrical energy.
Example: Battery or power plant. (teacher check for other answers.)
Name two parts of a simple circuit.
Battery and bulb
Name one way to measure motion.
Speed or distance
Name two types of forces.
Gravity and friction
What type of energy transfer occurs when you rub your hands together?
Heat through friction
What happens when electrical energy flows through a wire?
It creates a current
What happens if a circuit is open?
Electricity stops flowing
What happens to motion when force is applied?
It changes speed or direction
What happens when two equal forces act in opposite directions?
They cancel each other
Explain how energy moves in a food chain.
Energy moves from producers to consumers
How does electrical energy change in a light bulb?
It changes to light and heat
Explain the difference between series and parallel circuits.
Series: one path; Parallel: multiple paths
Explain how friction affects motion.
It slows objects down
Explain how gravity affects objects.
It pulls them toward Earth
Why does a metal spoon feel hot in boiling water?
Heat transfers from water to spoon
Why is copper used in wires?
It is a good conductor of electricity
Why do we use switches in circuits?
To open or close the circuit
Why does a ball stop rolling on the ground?
Friction and gravity
Why do astronauts float in space?
Very little gravity