Definitions
Light
Energy
100
What is the correct term for the following definition?
an invisible pulling force that works across space
Gravity
100
_____ must be present for your eyes to see anything.
Light
100
Name three ways energy is carried from one place to another.
electric current
waves
moving objects
200
What is the correct term for the following definition?
moving energy
Kinetic Energy
200
Will you be able to see anything in a room that has no light?
Will you be able to see anything in a room that has just a little bit of light?
No
Yes
200
Draw a diagram of a wave. Include labels of amplitude and wavelength.
300
What is the correct term for the following definition?
ability to do work
energy
300
When the bulb lights, energy is changed, or converted, from _____ energy to _____ energy.
electrical to light
300
The law of conservation of energy says that energy cannot be ______ or ______. It can only be transformed from one form to another.
created or destroyed
400
What is the correct term for the following definition?
when light hits a surface and it is converted into another form of energy(usually thermal)
light absorption
400
Draw a diagram of how you would light a bulb with a wire and battery.
400
When do you have the MOST potential energy? Why
Point G has the most potential energy because it’s the highest point and the higher you raise an object, the more gravitational potential energy it has.
500
What is the correct term for the following definition?
space between wave peaks
wavelength
500
What color surface would an ice cube melt faster on? Why?
An ice cube melts faster on a darker surface because darker colors absorb light. When light is absorb on a darker color, it converts to thermal (heat) energy and the ice cube begins to melt faster.
Some colors reflect better than others, and so they absorb less light and do not get as warm or melt the ice as fast.
500
Why can a dropper popper bounce higher than where it was dropped from when regular balls cannot?
Use the words elastic potential energy and gravitational potential energy.
When the popper is “energized,” it gains Elastic (stretchy) Potential Energy. When the popper flips back to its original position, the Elastic Potential Energy is converted to Kinetic Energy and the popper flies into the air.
When the popper is raised higher than the ground, it gains gravitational potential energy. The higher the popper is raised, the more gravitational potential energy it gains.