When heat is transferred between objects because they are touching, it is called _______________.
conduction
100
When an EM wave goes through a different medium and BENDS or changes direction as it moves it is called ________________.
Refraction
100
What part of the EM spectrum can we actually see?
Visible Light (colors)
100
An electrician is fixing a power line. Why would he wear rubber gloves while working on the line?
A Rubber is a poor conductor of heat but a good conductor of electricity.
B Rubber is a good conductor of heat but a poor conductor of electricity.
C Rubber is a poor conductor of heat and electricity.
D Rubber is a good conductor of heat and electricity.
C Rubber is a poor conductor of heat and electricity.
100
What is the relationship between eyesight and light?
A Light shines on all objects, so we see them.
B Light enters the eye before striking an object, so we see them.
C Light reflects off an object and then goes into the eye, so we see them.
C Light reflects off an object and then goes into the eye, so we see them.
200
_____________ is when heat is transferred to an object by an electromagnetic wave.
Radiation
200
___________ is when a wave BOUNCES back because it cannot travel through a different type of matter.
Reflection
200
What color of light has the shortest wavelength, highest frequency, and the most energy?
Violet!
200
Why are most coffee cups composed (made) of ceramic?
A Ceramic is a conductor that limits heat
B Ceramic is a conductor that aids (increases) heat
C Ceramic is an insulator that limits heat
D Ceramic is an insulator that aids (increases) heat
C Ceramic is an insulator that limits heat
200
How are light waves different from sound waves?
Light waves don't need a medium but sound waves do.
300
When heat is transferred between objects through a liquid or gas it is called ____________.
Convection
300
When light is sent in MANY DIRECTIONS because of traveling through different mediums it is called ___________.
Scattering
300
Which color of light has the longest wavelengths, lowest frequency, and least amount of energy?
Red!
300
Choose two objects that would conduct electricity/heat the BEST.
iron washer
rubber ball
steel fork
wooden spoon
cotton shirt
Iron washer and Steel fork
300
What part of your eye detects light using rods and cones, and an upside down picture of what we are seeing reflects onto it?
Retina
400
What would happen if you laid a darker object and a lighter object in the sun, then took the temperature of each?
Explain WHY.
The darker object's temperature would be higher because it absorbed more energy.
400
_____________ happens when an EM wave neither bounces or bends, but it is TAKEN IN or cancelled out by the medium.
Absorption
400
What are the colors of light in order from the longest wavelength to the shortest?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
400
Choose two objects that are insulators.
iron door key
rubber mallet
copper pipe
steel fork
cotton shirt
Rubber mallet and Cotton shirt
400
What state of matter does light travel through the fastest?
Gas
500
What is an EM wave that depends on the temperature of an object? The warmer the object, the brighter it would appear.
Infrared
500
During the day, the sand at the beach is very warm. Why does this happen?
Does the sand reflect, absorb, scatter, or refract the sun's energy?
The sand ABSORBS the sun's energy!
500
What kind of EM wave is dangerous to humans if not protected by sunscreen, sunglasses, long sleeves/pants, or shade?
Ultraviolet (UV)
500
What is a material called that you cannot clearly see through? Objects might look fuzzy through it, like looking through wax paper.
Translucent
500
What type of radiation on the EM spectrum has the lowest frequency with the longest wavelengths?