Energy & Motion
A ball rolls faster down a hill than another ball. What can you infer about its energy?
It has more energy because it is moving faster.
A moving object hits another object and causes it to move. What happened?
Energy was transferred from one object to another.
What is the distance between two wave crests called?
Wavelength
Why can you see an object when light shines on it?
Light reflects off the object into your eyes.
What must be true for a circuit to work?
It must be closed.
A sled moves farther after being pushed harder. Explain why.
A stronger push gives more energy, causing it to move farther.
Why does a moving object slow down after hitting another object?
Some energy is transferred to the other object.
A wave with greater amplitude hits an object. What will most likely happen?
It will cause a larger movement because it has more energy.
Why is it easier to see objects in a bright room than a dark room?
More light reflects off objects into your eyes.
A student adds another battery to a circuit. What will likely happen and why?
More energy will flow, making the device stronger/faster.
Two cars move at different speeds. Which has more energy and why?
The faster car, because speed increases energy.
Explain why a louder sound has more energy.
It has a greater amplitude, meaning more energy is transferred.
How does wavelength affect wave behavior?
Different wavelengths change how waves move and interact.
Why would a mirror reflect better than paper?
A mirror reflects light clearly, while paper scatters it.
A fan spins when connected to a battery. What energy change occurs?
Electrical energy → motion energy.
Why does increasing speed increase the impact of a collision?
Faster objects carry more energy to transfer.
A bell rings when hit. What two energy changes occur?
Motion energy → sound energy.
Why do stronger waves move objects more?
They carry more energy.
In a noisy room, why might visual signals work better than sound?
Sound is harder to hear, but visuals are clear.
Why would a device stop working if the switch is open?
The circuit is broken, so energy cannot flow.
A student increases the force on an object and observes it travels farther. What conclusion can be made?
Greater force increases energy, causing more movement.
A faster object hits blocks and moves more of them. Explain why.
It transfers more energy during the collision.
Two waves hit objects. One has higher amplitude. Predict the outcome.
The higher amplitude wave causes more movement.
Explain how light allows you to see an object.
Light travels from a source, reflects off the object, and enters the eye.
Why does adding batteries increase a device’s performance?
It increases the energy supplied to the system.