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SUPERQUIZ 2

SuperQuiz Section 2, pp14-21

QuestionAnswer
Which of the following is NOT true of Earth's atmosphere? A) it gives us air to breathe B) it has six layers C) it keeps Earth from freezing D) it shields Earth from the Sun's deadlier rays E) it consists of mostly nitrogen B) it has six layers it definitely has four layers, and some scientists think it has five
Not all scientists agree that the _______________________ is really part of Earth's atmosphere. the exosphere
What are the two main gases in Earth's atmosphere? nitrogen and oxygen
Where is most of the atmosphere's water found? in the troposphere
In what layer of the atmosphere are the auroras normally seen? the thermosphere
What is another name for the thermosphere? the ionosphere
Why are high temperatures found in the thermosphere? it absorbs UV rays from the Sun
In what layer of the atmosphere does the International Space Station travel? the thermosphere
Which layer of Earth's atmosphere is the coldest? the mesosphere
In what layer of Earth's atmosphere do meteorites burn up? the mesosphere
Why is the mesosphere difficult to study? weather balloons and aircraft cannot fly high enough
In what layer of the atmosphere is "blue jet" lighting seen? the stratosphere
Which layer of the atmosphere holds the ozone layer? the stratosphere
What is the name for Earth's filter for harmful UV radiation? the ozone layer
Why are there very few clouds in the stratosphere? because it is very dry
At what altitude do most airliners cruise? 35,000 feet
The word "tropos" means what? change
Approximately what percentage of the atmosphere's mass is found in the troposphere? 80 percent
The aurora borealis occur in which hemisphere? northern
the aurora australis occur in which hemisphere? southern
A stream of solar particles that erupts from sunspots on the Sun's surface is called what? solar wind
Why do the auroras occur over Earth's poles? because this is where there is a deep cleft in Earth's magnetosphere
What occurs when electrically charged particles streaming from the Sun collide at high speeds with particles of gas in Earth's atmosphere? auroras
What is the shape of the polar cleft in the magnetosphere above Earth's poles? roughly oval
Where on the Sun does polar wind erupt from? from sunspots
How often do sunspots seem to peak? every 11 years
Water vapor is only found in what layer of Earth's atmosphere? the troposphere
Which of the following is NOT true about water on Earth? A) it is found on Earth's surface and in the stratosphere B) it is older than Earth itself C) no one knows how it came to Earth D) water is never gained or lost on Earth E) some of Earth's water may be older than the Sun A) it is found on Earth's surface and in the stratosphere (it is found in the troposphere)
What percentage of Earth's surface water is saltwater? 96.5 percent
What percentage of Earth's water is frozen in ice? 2%
When vapor condenses back into water again, it releases its _________ back into the atmosphere energy
The point at which air can't hold any more water is known as its what? dew point
What is the term for the proportion of water vapor in the air? humidity
Weather is the ________________ cycle in action water
The amount of moisture the air can hold varies with ____________. temperature
What is the term for the total amount of moisture in the air? absolute humidity
What is the term for the amount of moisture there is in the air compared to the total it could hold at that temperature? relative humidity
True or false- water vapor can evaporate, or transpire, from the leaves of plants true
Created by: St Rita SD
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