Waves
Light Waves
Anything but Science
7th Grade Science
Vocabulary
100
A type of wave in which matter moves in repeated patterns
Mechanical Waves
100
_______________ is when light rays bounce back when it hits a surface it cannot pass through.
Reflection
100
Name the 7 continents
Australia, Asia, Europe, North America, South America, Antarctica
100
Two or more atoms connected with a chemical bond.
Molecules
100
The bending of light when it moves from one substance to another.
Refraction.
200
Waves transfer ___________ from one location to another without moving ________
energy; matter
200
Do Microwaves or X-Rays have a higher frequency? Explain
X-Rays because they are located towards the right of the spectrum and have lower wavelengths.
200
Name 4 Gods/Goddess that the Ancient Greeks believed in.
Zeus,Poseidon,Ares,Demeter,Persephone,Artemis,Athena...
200
The substance that reacts during a chemical reaction. Found to the left of the arrow in a chemical equation
Reactants
200
Define: Amplitude
Amplitude is the distance from the resting point in a wave to the crest.
300
What is the amplitude of this wave?
10mm. It is the distance from resting point to crest.
300
Which portion of the electromagnetic spectrum includes the entire range of light that can be detected by the human eye?
Visible Light
300
Set, floater, and wipe are terms used in which team sport?
Volleyball
300
Identify whether it is a chemical or physical change:
Burning of paper.
Chemical change
300
How do you measure the frequency of a wave?
Number of wave/ time
400
Based on your understanding of waves, are you able to hear sound in space? Explain your reasoning.
No. Sound waves are a mechanical wave which require matter in which to travel. Space does not have matter to allow it to travel through.
400
According to the image, what does a convex lens do to light?
Convex lenses focus light in one location.
400
What country is responsible for creating the Olympic Games?
Greece
400
Identify whether it is a chemical or physical change: Freezing water to form ice and then leaving it outside to melt into a liquid.
Physical change
400
What colors of light are absorbed by an apple? What colors of light are reflected by the apple?
Red light is reflected. All other colors of light are absorbed.
500
What is the wavelength of the wave?
2.0m. Remember, you must include 1 crest and 1 trough.
500
Which of the following electromagnetic waves has the highest energy? Explain.
Gamma Rays because they have the highest frequency.
500
What country has the most natural lakes?
Canada
500
Explain the difference between Evaporation and Transpiration.
Evaporation: The transformation of liquid water into a gas state.
Transpiration: The evaporation of water from plants and trees.
500
Define: Wavelength
The length of one complete wave cycle. Measured from crest to crest or trough to trough.