The gases that surround the Earth is called the How much of the Earth’s water is salty?

The gases that surround the The gases that surround the Earth is called theEarth is called the

How much of the Earth’s water How much of the Earth’s water is salty?is salty?

The gases in the primitive The gases in the primitive atmosphere that were deadly atmosphere that were deadly

were:were:

About 4.5 billion years About 4.5 billion years ago trapped gases within ago trapped gases within

the Earth escaped the Earth escaped through _____________.through _____________.Volcan

oes

The appearance of what gases The appearance of what gases allowed cyanobacteria to live allowed cyanobacteria to live

and produce oxygen.and produce oxygen.

The most abundant gas in our The most abundant gas in our atmosphere now is:atmosphere now is:

The percentage of oxygen in The percentage of oxygen in our present atmosphere is:our present atmosphere is:

Oxygen became an important Oxygen became an important part of our atmosphere after the part of our atmosphere after the

emergence of:emergence of:

A meteorologist is a person who A meteorologist is a person who studies:studies:

List the layers of the atmosphere List the layers of the atmosphere from highest to lowest.from highest to lowest.

•Thermosphere•Mesosphere•Stratosphere•Troposphere

The layer of the atmosphere The layer of the atmosphere that you live in is the:that you live in is the:

Auroras are caused by Auroras are caused by chemically charged particles in chemically charged particles in

this layer.this layer.

Ozone is a form of:Ozone is a form of:

Oxygen is a waste product Oxygen is a waste product given off by plants.given off by plants.

True or FalseTrue or False

As you walk up a mountain, the As you walk up a mountain, the air gets:air gets:

Water boils on the Celsius scale Water boils on the Celsius scale at:at:

Water freezes on the Celsius Water freezes on the Celsius scale at:scale at:

The sphere that contains rock The sphere that contains rock and land is the lithosphere.and land is the lithosphere.

True or FalseTrue or False

The direct transfer of heat from The direct transfer of heat from one substance to another is one substance to another is

called:called:

The transfer of heat in gas or The transfer of heat in gas or liquids is:liquids is:

Weather occurs in this layer of Weather occurs in this layer of the atmosphere.the atmosphere.

Satellites orbit in the layer.Satellites orbit in the layer.

This is the coldest layer in the This is the coldest layer in the atmosphere.atmosphere.

The ozone and jet stream are The ozone and jet stream are found in this layer.found in this layer.

AM radio waves are bounced AM radio waves are bounced back to the Earth.back to the Earth.

Meteors burn up in this layer.Meteors burn up in this layer.

As you go up in the As you go up in the troposphere, the temperature:troposphere, the temperature:

As you go up in the As you go up in the stratosphere, the temperature:stratosphere, the temperature:

As you go up in the As you go up in the thermosphere, the temperature:thermosphere, the temperature:

As you go up in the As you go up in the mesosphere, the temperature:mesosphere, the temperature:

As you go up in the As you go up in the atmosphere, the air pressure:atmosphere, the air pressure:

This gas is needed for growth of This gas is needed for growth of muscles, skin, and organs.muscles, skin, and organs.

This gas is taken in during This gas is taken in during photosynthesis to make oxygen photosynthesis to make oxygen

and food.and food.

This gas makes up 21% of the This gas makes up 21% of the present atmosphere.present atmosphere.

This gas is needed for all This gas is needed for all weather on Earth.weather on Earth.

When you dog Fido sits on your When you dog Fido sits on your lap, his warmth is heating you lap, his warmth is heating you

by:by:

Water boiling in a pot is heated Water boiling in a pot is heated primarily by:primarily by:

The sun’s rays warm you by:The sun’s rays warm you by:

A cow getting branded by a hot A cow getting branded by a hot iron:iron:

Your feet get cold when you Your feet get cold when you open the refrigerator.open the refrigerator.

Warming up your pizza in the Warming up your pizza in the microwave.microwave.

Walking barefoot on the hot Walking barefoot on the hot sand of the beach.sand of the beach.

Energy transferred as Energy transferred as electromagnetic waves.electromagnetic waves.

The burning of fossil fuelsThe burning of fossil fuels

Ozone or Greenhouse EffectOzone or Greenhouse Effect

Ice caps will meltIce caps will melt


Increased risk of skin Increased risk of skin cancercancer


Planting a tree affects thePlanting a tree affects the


Humans releasing CFCsHumans releasing CFCs


Not using Styrofoam with Not using Styrofoam with CFCs CFCs


CataractsCataracts


Keeps the Earth warmKeeps the Earth warm


Cutting down treesCutting down trees


Blocks the sun’s UV raysBlocks the sun’s UV rays


carbon dioxide and water carbon dioxide and water vaporvapor


Lines of equal temperature are Lines of equal temperature are called:called:

A high temperature means that A high temperature means that particles are moving:particles are moving:

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The gases that surround the Earth is called the How much of the Earth’s water is salty?