Energy and Motion
the ability to do work, to cause motion or change
what is energy?
Which of the following is a way that energy can transfer without moving objects?
when it is carried by sound
when it is carried by light
when it is carried by heat
To take in. When light transfers energy to a material, it ___________ some of the energy.
absorbs
This type of energy allows you to see
light energy
What gave the ping pong ball more energy to make it roll to 1 m?
the height you released the ball and the angle of the ramp
If two objects with different weights are moving at the same speed, the lighter object has more or less energy than the heavier object?
Less energy
All sound starts with this
a vibration
To bounce off. All materials that you can see ______ light.
reflect
Which of the following are forms of energy?
all of the above
Why did the thicker rubber band cause the "zip o'matic" to spin faster?
More energy was needed to twist the rubber band- the more energy put in the more you get out.
When an object moves slower, its energy of motion increases, decreases, or stays the same?
decreases
What happens when light bounces off of an object?
It is reflected
To quickly move back and forth
vibrate
How can a roller coaster gain potential (or stored) energy?
Go higher
What caused a bigger splash in the water, the ping pong ball or the rock and why?
The rock made a bigger splash/transferred more energy to the water because it was heavier.
Scientists say that energy is conserved because energy....
cannot be created or destroyed
When a person is holding a hot drink, explain how the drink is warming up their hands.
Energy carried by heat is being transferred to their hands. This causes their hands to warm up.
define energy transfer
To shift or move from one object to another. A moving object can transfer its energy to another object.
A hair dryer transforms _______energy to _____ & ________
electrical to sound and heat
Explain how a rube goldberg machine transfers energy
Energy transfer in a Rube Goldberg machine involves converting one form of energy into another as the marble or other object moves through. The machine begins with potential energy stored in various objects placed at higher positions.
Suppose a heavier ball fell off the same table at the same speed as a lighter ball. Would the heavier ball have more, less, or the same amount of energy than the lighter ball?
More energy
When light transfers energy to material, the material takes in some of the energy.What is this called?
absorbtion
define energy conservation
having the same total amount of energy before and after a change happens. Energy cannot be created or destroyed, only conserved.
Toasting a bagel in the toaster turns electrical energy converting to what?
heat energy
When you twist the rubber band, this is what kind of energy?
stored (potential?