Energy Transformation
This is the energy of moving objects.
Mechanical Energy
This is an incomplete path that electricity cannot travel through.
Open Circuit.
This happens when light bounces off a surface
Reflect
Chemical---electrical---mechanical
A student tests two objects with a magnet. One is attracted, one is not. What property are they measuring?
Magnetism
A battery stores this kind of energy, which a flashlight can change into electrical energy.
Chemical Energy
In this kind of circuit, the path is complete and electricity can flow.
Closed Circuit
This happens when light bends as it moves from one material into another.
Refract
Finish the sentence:
Light refracts because it_______________________
Slows down from one medium to another
A student stirs salt into water until the salt can no longer be seen. What is the best description of the salt water?
A solution with salt spread throughout
A toaster uses electrical energy and changes much of it into this energy that warms bread.
Thermal
A bulb is connected to a battery, but there is a gap in the wire. This kind of circuit keeps the bulb off.
Open Circuit
A dark shirt takes in light energy and warms up. Name the light behavior.
Absorb
A student builds a circuit with a battery, wires, and a bulb, but the bulb stays off. Give two possible things to check and explain why each could solve the problem.
Answer may vary
Two blocks have the same size, but one is heavier. Describe a way to compare a measurable property of the blocks and explain what the results could tell you.
Use a balance to measure mass
A speaker changes electrical energy into this energy that travels to your ears.
Sound Energy
A switch is turned on and the bulb lights. What change did the switch make to the circuit?
It opened and closed the circuit
A spoon looks bent where it enters a glass of water because light changes direction between the water and air. Name the light behavior.
Refract
A student says, “A switch turns off a bulb by removing the electricity.” Explain what the switch actually does in a simple circuit.
Opens and closes it
A student pulls a wagon, but a classmate gently pushes it in the opposite direction. The wagon slows down. Explain what could happen if the opposing push became stronger than the pull.
It would cause the wagon to stop and ultimately change directions
A toy car’s battery provides stored energy. The car moves, makes a sound, and its motor may warm up. Name the energy changes from the battery to the car’s motion, sound, and warmth.
Chemical---mechanical----sound---thermal
A bulb does not light in a simple circuit. The battery and bulb are connected, but one wire has come loose. What must happen to the wire for electricity to flow and the bulb to light?
It must be reconnected
Sunlight reaches a shiny mirror, then bounces toward your eyes so you can see your reflection. What happens to the light at the mirror?
Reflect
A clear plastic lens makes a nearby object look larger. Explain what happens to light as it passes through the lens and how that can change what the student sees.
It slows down and refracts
A toy car rolls across a floor and slows down. Predict what might happen if the same car rolls across a smoother surface. Explain your prediction using forces.
It would go faster because there is less friction