Types of Energy
Energy of a moving object is called __________ energy.
Kinetic energy
Temperature is measured in __________.
Degrees Celsius (°C)
When a ball falls, gravitational potential energy transforms into __________ energy.
Kinetic energy
The power source in a circuit is usually a __________.
Battery
What is the name of the fast-food chain famous for its "Golden Arches" logo?
McDonald's
Energy stored because of an object’s height is called __________ energy.
Gravitational potential energy
Heat always moves from __________ to __________ temperatures.
Hot → Cold
A wind turbine transforms kinetic energy of wind into __________ energy.
Electrical energy
A circuit must be __________ to work.
Closed / complete
What is the name of the largest big cat species in the world, known for its orange coat and black stripes?
Tiger
The energy stored in food is called __________ energy.
Chemical energy
Heat transfer through direct contact is called __________.
Conduction
Explain the difference between an energy transfer and an energy transformation.
An energy transfer is when energy moves from one place to another, but it stays the same type.
Example: Heat moving from a hot pan to your hand.
An energy transformation is when energy changes into a different type.
Example: Electrical energy turning into light.
The part of a circuit that controls the flow of electricity is the __________.
Switch
What is the name of the fictional wizard who attends Hogwarts and has a lightning-shaped scar?
Harry Potter
Energy stored in a stretched rubber band is called __________ energy.
Elastic potential energy
Describe the process of convection of heat in a boiling water
In a pot of boiling water, convection occurs as heat is transferred through the movement of the water itself. Water at the bottom of the pot heats up, becomes less dense, and rises. Cooler, denser water from the top sinks to take its place, where it is then heated and rises, creating a continuous cycle of convection currents that distributes heat evenly throughout the pot.
Describe each step where energy transfers or transforms in a toaster making toast
The electricity from the wall gives the toaster electrical energy.
The toaster changes electrical energy into heat energy (transformation).
The heat energy transfers into the bread (transfer).
The bread heats up and becomes toast.
What is needed to make a complete circuit?
A complete circuit needs:
A power source (like a battery),
Wires,
A load (like a bulb or motor),
And everything must be connected in a full loop with no breaks.
What is the name of the world's largest ocean?
Pacific Ocean
The energy transferred by waves like light or microwaves is called __________ energy.
Electromagnetic (radiant) energy
Why radiation doesn't need to medium to transport heat?
Radiation doesn't need a medium because it transfers heat through electromagnetic waves, such as infrared, which can travel through a vacuum.
Describe all the energy transformations in a toy car that rolls after you wind it up.
When you wind the car, your muscles use chemical energy (from food).
This becomes mechanical/kinetic energy in your hands.
The car stores this energy in a spring as elastic potential energy.
When you let go, the spring releases the energy and changes it into kinetic (movement) energy, making the car move.
Some energy is also wasted as sound (the wheels) and heat (friction).
Explain why a circuit will not work if one wire is disconnected.
If one wire is disconnected, the circuit has a gap.
Electricity cannot jump the gap, so it cannot flow around the loop.
Because the electricity cannot flow, the circuit turns off.
What is the name of the world's largest rainforest, located in South America?
Amazon Rainforest