Forms of Energy (5.2)
What is the ability to do work or cause change?
Energy
Motion is described by these two things.
speed and direction
lectricity flows easily through materials like copper. These materials are called _____.
Conductors
Sound is produced when objects do this.
vibrate
Visible light is this type of energy.
radiant energy
What is the energy of motion called?
Kinetic Energy
The overall force acting on an object is called this.
net force
Rub a balloon on your hair and it sticks to the wall. This is an example of _____.
Static Electricity
Sound travels fastest through this state of matter.
solid
Visible light travels in this type of wave.
transverse waves
Stored energy, like a stretched rubber band or a book on a shelf, is called this.
Potential Energy
This force opposes motion between two surfaces that are touching.
friction
Electricity only flows when a circuit is-
If you increase the energy of a sound wave, the sound becomes
louder
The colors of the rainbow together make up this.
visible spectrum
When a toaster turns electrical energy into heat, this is happening.
Energy Transformation
When two objects collide and change speed or direction, this is being transferred.
energy
A light bulb changes electrical energy into these two forms of energy.
radiant (light) energy and thermal (heat) energy
What type of wave does sound travel in?
Compression wave
When light bends as it passes from air into water, this is called _____
refraction
What is one way to conserve energy?
Turn off lights, unplug devices when you are not using them, take shorter showers
A heavy truck and a small car are pushed with the same force. The object with more mass will have a smaller or larger change in motion.
smaller
When electric current flows through a wire wrapped around an iron core it creates-
an electromagnet
If an object is vibrating slowly, what type of pitch will it have?
a low pitch
Solar panels transform radiant energy into this type of energy
electrical energy