Types of Energy
Transfer of Energy
Waves in Water
Sound Waves
Miscellaneous
100
What is the energy of motion?
Mechanical Energy
100
What are the two ways in which energy is transferred?
Waves and collisions.
100
What causes tsunamis?
Earthquakes cause tsunamis.
100
Why does sound travel faster in a solid?
The molecules in a solid are closer together than in liquid or gas.
100
A liquid or gas that has the ability to flow.
What is fluid?
200
What are the two types of mechanical energy?
The two types of mechanical energy are potential and kinetic.
200
What kind of transfer of energy is bowling? Collision or waves?
Collision
200
How does the water move in an ocean wave?
Water molecules only move up and down.
200
How do you know that a speaker is producing sound energy other than by hearing it?
The speaker vibrates.
200
Increase in size of a substance in response to an increase in temperature of the substance.
What is thermal expansion
300
What does MELTS stand for?
Mechanical Electrical Light Thermal Sound
300
True or false: The harder you kick a ball, the more energy will be transferred from your foot to the ball.
True. More energy will transfer and the ball will go faster and travel farther.
300
What part of the wave travels from one place to another?
The energy of the wave travels.
300
Why does the floor vibrate when you go to a loud concert?
Sound energy is caused by vibrations.
or
Sound energy is being produced.
300
Before someone jumps into a pool, an inner tube is located, as shown in the first picture. After the person jumps in, the inner tube is located as shown in the second picture. The person did not touch the inner tube at all. Use what you know about waves in water and the transfer of energy to explain why this happened.
When you jumped, it created waves. The waves made the tube move.
400
What are the types of energy that the sun produces?
The sun produces light and thermal energy.
400
Why does a buoy bob up and down on the surface of the water in the ocean.
Energy is transferred from the wind to the water causing waves and then energy is transferred from the waves to the buoy.
400
Why does a small boat move further from the shore in the ocean?
The energy from the waves in the ocean cause it to move.
400
When one person speaks to a second person from across the room, their voice can be heard. When the same person speaks into a plastic cup that is connected by a rope to another plastic cup, which the second person holds to their ear across the room, the person speaking can be heard more loudly than they were before even though they speak at the same volume. What could explain this?
Sound waves travel better through solids than gases.
400
Energy can not be created of destroyed it can only be transfered or tranformed.
What is the Law of Conservation of Energy
500
When you rub your hands together, what type of energy are you using? What type of energy are you creating?
BONUS: What force is at work?
Your are using MECHANICAL energy to create THERMAL energy.
The force at work is friction.
500
Describe how energy transfers when you play the game of pool.
Energy transfers from the stick to the white ball, then from the white ball to the color or stripe ball, then the color or stripe ball goes into the pocket.
500
A plastic tub is filled halfway with water, and a rubber duck is placed on top of the water to float, demonstrating how waves in water transfer energy. How could this model be improved?
Use a straw to blow air on the surface of the water and create waves.
500
Which of the following plans would be best for a classroom investigation about how sound transfers energy?
A. Place 1/8 cup of uncooked rice on a paper plate. Have a student take a microphone and speak into it right next to the rice to observe how the rice moves. Then, have the student speak into the microphone farther from the rice, and observe how the rice moves.
B. Turn a radio speaker sideways, and cover the face of it with plastic wrap. Place 1/8 cup of uncooked rice on top of the plastic wrap. Turn the radio on at a low volume, and observe how the rice moves. Then, turn the radio on at a high volume, and observe how the rice moves.
C. Place 1/8 cup of uncooked rice on a table. Have a student hit the table hard near the rice, and observe how the rice moves. Then, have the student hit the table gently near the rice, and observe how the rice moves.
D. Place 1/8 cup of uncooked rice in one side of a plastic tub. Have a student blow gently through a straw toward the rice, and observe how the rice moves. Then, have the student blow harder through the straw, and observe how the rice moves.
What is B. Turn a radio speaker sideways, and cover the face of it with plastic wrap. Place 1/8 cup of uncooked rice on top of the plastic wrap. Turn the radio on at a low volume, and observe how the rice moves. Then, turn the radio on at a high volume, and observe how the rice moves.
500
A tuning fork is a device made of steel. It has two prongs. When someone holds the handle and strikes the prongs, it causes the tuning fork to vibrate and produce a sound. Tuning forks of different sizes produce lower or higher pitches of sound. What would you observe if someone struck the prongs of a tuning fork and then placed the prongs into a bowl of water?
The sound waves coming from the vibrating tuning fork would transfer energy to create visible waves in the water.