5th Grade Science Unit 4 - Air, Water & Energy

The mixture of gases that surround the Earth is called its __________________
The gas that almost all organisms need to live is:
1. carbon monoxide
2. oxygen
3. nitrogen
4. hydrogen
The layer of the atmosphere that screens out 99 percent of the Sun's ultraviolet rays is called the ________ layer.
Most of the air in the atmosphere is:
1. oxygen
2. nitrogen
3. water vapor
4. hydrogen
Fuels that were formed from the decay of ancient forms of life are called __________ fuels.
Fossil fuels are considered to be:
1. renewable resources
2. nonrenewable resources
3. neither
Check the items that make up smog:
1. acid rain
2. smoke
3. fog
4. hydrogen
Acid rain, smoke, smog ground level ozone are all forms of air ______________ .
Check which of the folllowing can cause of air pollution:
1. erupting volcanoes
2. trees and plants
3. automobile engine exhaust
4. smoke from factories' smokestacks
5. fish swimming in the ocean
Plants take in ________ and produce _______________ .
1. carbon monoxide, carbon dioxide
2. hydrogen, nitrogen
3. carbon dioxide, oxygen
4. oxigen, carbon dioxide
Over 97% of the Earht's water is:
1. fresh water
2. salt water
Which is the main source of water in the water cycle:
1. reservoirs
2. aquifers
3. the oceans
4. trees
Select the resources we can obtain from the ocean: (Check all that apply.)
1. food
2. coal
3. oil & gas
4. minerals
5. energy
Water vapor cools and turns into tiny droplets of water that collect into clouds, This process is called:
1. evaporation
2. condensation
3. precipitation
4. polution
Check all the sources below that are how fresh water can be polluted:
1. ocean-going ships dumping garbage
2. acid rain
3. runoff water that contains fertilizer from farms
4. shrimp boats that dump waste in the ocean
5. waste from youo house that goes down the toilets and the sinks.
An underground layer of rock or soil that is filled with water is called an _____________ .
The process of removing salt from sea water is ______________ .
When you go to the beach and walk out into the ocean, you are walking on the part of the ocean floor called the ___________.
1. continental slope
2. continental rise
3. continental shelf
4. abyssal plain
Surface currents on the ocean are driven by the ____________ .
As waves move forward in the ocean, the water particles in the wave also move forward.
1. True
2. False
The ocean has streamlike movements of water called ocean ______________ .
1. tides
2. rivers
3. currents
4. flows
When an ocean wave approaches the shore, it gets
1. higher
2. lower
3. stays the same
The deepest part of the ocean occurs in
1. the abyssal plain
2. the mid-ocean ridge
3. a trench
4. the continental slope
Which is a steeper and deeper part of the ocean?
1. the continental shelf
2. the continental slope
Ocean currents can either warm and cool coastal lands.
1. True
2. False
Tidal range is greatest during:
1. spring tide
2. high tide
3. neap tide
4. the winter
The primary influence on ocean tides is the _______________.
Most of the Earth's oxygen supply is produced by:
1. animals exhaling
2. decaying bacteria
3. green plants
4. evaporation
The source of geothermal energy is:
1. nuclear fission
2. fossil fuel
3. the Earth's internal heat
4. the ocean tides
What are required to turn dead plant and animal remains into oil and natural gas. (Check all that apply.)
1. pressure
2. water
3. heat
4. sand