Collisions
When two objects hit each other, energy can be transferred from one object to the other. What is this called?
A collision
What type of energy moves from something warmer to something cooler?
Heat energy
What causes sound?
Vibrations
What kind of energy does a moving object have?
Motion Energy
The ability to make things happen or cause a change.
Energy
A bowling ball hits a bowling pin. What happens to some of the bowling ball's energy?
It transfers to the bowling pin.
You hold a cold ice cube in your hand. Which direction does heat energy move?
From your warm hand to the cold ice cube.
You hit a drum with a stick. The drum vibrates and you hear a sound. What energy is being transferred?
Sound energy
A soccer ball is sitting still. A player kicks it. What happens to the ball's energy?
Energy is transferred to the ball, causing it to move.
When two objects run into each other.
Collision
Which would probably transfer more energy during a collision: a fast-moving basketball or a slowly rolling basketball?
The fast-moving basketball
A metal spoon sits in a cup of hot chocolate. After a few minutes, the spoon becomes warm. What happened?
Heat energy transferred from the hot chocolate to the spoon.
Why can you hear someone clap their hands even when you aren't touching them?
Vibrations travel through the air as sound energy.
Which has more motion energy: a slowly rolling ball or the same ball rolling quickly?
The quickly rolling ball.
The type of energy that an object has at the top of a ramp.
stored or potential energy
A student rolls a heavy ball and a light ball down the same ramp. Both hit a cup. Which ball would likely transfer more energy during the collision?
The heavier ball.
A popsicle is left outside on a hot day. Explain why the popsicle gets smaller and eventually melts.
Heat energy transfers from the warmer surroundings to the colder popsicle, causing it to melt.
A student hits a drum harder than another student. How will the sound most likely change?
The sound will be louder because more energy is transferred.
A student rolls a marble down a ramp. The marble hits a cup and knocks it over. Describe the energy transfer.
The moving marble transfers energy to the cup during the collision, causing the cup to move.
Quick back-and-forth movements that can transfer energy and create sound.
Two identical balls roll toward the same target. Ball A moves slowly, and Ball B moves quickly. Explain why Ball B would likely cause a bigger change when it hits the target.
Ball B has more energy because it is moving faster, so it can transfer more energy during the collision.
A student puts a metal spoon and a wooden spoon in the same bowl of hot soup. The metal spoon feels hotter. What does this show?
Different materials can transfer heat energy differently.
A guitar string is plucked. The string vibrates and causes the air around it to vibrate. How does this eventually allow you to hear the guitar?
The vibrations transfer energy through the air to your ears, allowing you to hear the sound.
Two students use identical marbles on identical ramps. One marble starts higher up the ramp. Which marble will likely transfer more energy when it hits the target, and why?
The marble released from the higher ramp will likely transfer more energy because it will be moving faster when it reaches the target.
The energy an object has because it is moving.
Kinetic Energy