Waves 1
Waves 2
Climate
100

Wave B.


100

All sound waves move at nearly the same speed through the air.


High-frequency sound waves have a shorter [amplitude] [pitch] [wavelength] and a higher [amplitude] [pitch] [wavelength] than low-frequency sound waves.

Wavelength

Pitch

100

1. One things that tends to increase CO2 levels....


2. One thing that tends to decrease CO2 levels....

1. Cutting down trees instead of growing trees 

2. Using clean sources of energy instead of fossil fuels

200

When waves travel through water, why do the moving water particles continue to return to their starting position?

A. Waves transfer matter, but not energy.
B. Waves transfer both matter and energy.
C. Waves transfer energy, but not matter.
D. Waves don’t transfer matter or energy.


C. Waves transfer energy, but not matter.

200

Provide at least one example of a mechanical wave and one electromagnetic wave

Electromagnetic waves:

Microwave

Radiowave

Mechanical waves:

Ocean wave

Seismic wave

200

To celebrate Earth Day, the employees of a company plan to reduce their carbon footprint in the workplace. Identify the changes they can make to achieve their plan...

Go paperless

Use natural lighting

Grow Trees Nearby

Reduce Reuse and Recycle

Carpool

300

Disturbances inside Earth’s core cause earthquakes. The starting point of the disturbance is called the epicenter. Why does the amplitude of a seismic wave usually decrease as the wave moves away from the epicenter?

A. The waves lose energy in the form of heat.
B. The frequency of the waves continues to increase.
C. The wavelength of the waves continues to decrease.
D. The waves encounter entirely different mediums.


A. The waves lose energy in the form of heat.
300

300

You are a sales representative for a company that makes a new alternate fuel for vehicles. You have prepared a presentation for the environmental engineers to sell your new product. What question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment?

A. Do we have to change any parts of the vehicle to use this alternate fuel?
B. Will the vehicles get better fuel mileage with the alternate fuel?
C. How much greenhouse gas does your fuel produce compared with current fuel sources?
D. Is the alternate fuel more expensive than fossil fuel?



How much greenhouse gas does your fuel produce compared with current fuel sources?

400

Why do sound waves move faster through the ground than through the air?

A. Particles of matter are packed more loosely in the ground than in the air.
B. Particles of matter are packed more tightly in the ground than in the air.
C. Air doesn’t contain any particles of matter to transmit sound waves.
D. The elevation of the ground is lower than the elevation of the air space.


B. Particles of matter are packed more tightly in the ground than in the air.
400

the distance between adjacent crests or troughs is called...

  • wavelength

  • frequency

  • amplitude

Wavelength

400


The citizens of a town are aware of climate change, and they want to make changes to control it. One change they consider is replacing the nearby thermal power plant with a hydroelectric plant. If they want to make sure this change will help to slow climate change, which question should they ask?



A. Is it less expensive to build a hydroelectric power plant than a thermal power plant?
B. Does a hydroelectric power plant employ fewer people than a thermal power plant?
C. Does a hydroelectric power plant emit less CO2 than a thermal power plant?
D. Is the cost of operating a hydroelectric power plant less than the cost of running a thermal power plant?


Does a hydroelectric power plant emit less CO2 than a thermal power plant?

500

A.

500

the height of a wave from its equilibrium position is called

amplitude


500

Which statement explains why greenhouse gases are needed for the survival of life on Earth?

A. Greenhouse gases are clean sources of energy.
B. Without greenhouse gases, Earth would be too cold for life to exist.
C. Inhaling greenhouse gases is essential for proper lung function.
D. Greenhouse gases prevent celestial objects from entering Earth’s atmosphere.


B. Without greenhouse gases, Earth would be too cold for life to exist.


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