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100
When a sound is reflected, it creates a (an) ___________.
echo.
100
The movement of static electricity is called a (an) __________.
discharge
100
You can see through glass easily because it is _________.
transparent
100
The process that transfers heat through liquids or gases is ____________.
convection
100
Earth is surrounded by an invisible __________.
magnetic field
200
Motion can be turned into electrical energy by an electric _________.
generator
200
When a sound has a great deal of energy, it also has a high _________.
amplitude
200
White light can be separated into different colors by a (an) _____________
prism
200
Thermal energy is the flow of _________ between objects.
heat
200
Electric current flows through a (an) ___________.
circuit
300
True or False: A transparent object absorbs or reflects all light.
False transparent objects allow light to pass through them
300
How do we use energy?
Cook food, heat homes, cool homes, move around, communicate
300
What happens to the beam of a flashlight when it hits a mirror?
it is reflected off the mirror
300
True or False: Heat cannot travel through space.
False heat can only move by radiation
300
What materials would make good insulators for a hot cup of soup?
foam or plastic containers, wooden containers
400
A form of energy that always moves fro a warmer object to a cooler object is ________.
heat
400
Which process transfers heat through liquids or gases?
convection
400
Which of these has magnetic properties and can be controlled by a switch? A.) an electric current B.) an electromagnet C.) a magnetic field D.) a magnetic force
B.) an electromagnet
400
A device that indicates the direction of Earth's North Pole is a___________.
compass
400
What term describes the highness or lowness of a sound.
pitch
500
What is produced when energy causes particles to vibrate in waves?
sound
500
Describe how heat is transferred by conduction?
Conduction is heat transferred from one objet or material to another or transferred within an object; an example is a metal spoon in boiling water becoming too hot.
500
Describe how heat is transferred by convection.
Convection is heat transferred with a material; an example is boiling water.
500
Describe how heat is transferred by radiation.
Radiation is heat that travels through space; an example is warmth from a wire in a fireplace.
500
A window curtain blocks light. The curtain is _________.
opaque