REALLY HARD SCIENCE

lowest layer of earth's atmosphere, where earth's weather occurs

• troposphere

• stratosphere

• mesosphere

• exosphere

contains the ozone layer

• troposphere

• mesosphere

• exosphere

• stratosphere

the middle layer of the atmosphere, most meteoroids burn up here

• stratosphere

• mesosphere

• troposphere

• exosphere

outermost layer of the atmosphere, nitrogen and oxygen molecules convert solar energy into heat

• mesosphere

• stratosphere

• thermosphere

• troposphere

2 layers of the thermosphere

• troposphere and stratosphere

• ionosphere and exosphere

radio waves bounce off these ions and bounce back to earth's surface

• ionosphere

• exosphere

• troposphere

• stratosphere

satellites orbit in this, phone calls and tv pictures reach you by communications satellites in ____________

• thermosphere

• exosphere

• troposphere

• stratosphere

fill in the blank:

________ is the condition of air around us

• weather

• earth

• atmosphere

• gravity

fill in the blank:

earth is surrounded by a blanket of air called the ______________

• oxygen

• atmosphere

fill in the blank:

about 3/4 of the atmosphere is ________________

• nitrogen

• oxygen