Page 118 - Science Course 1 (Book 2)
P. 118
Mo9-L3: Lesson Review Quiz (True or False)
Direction: On the line before each statement, write T if the statement is true or F if the statement is false.
1. Earth’s atmosphere keeps the planet’s temperature within a certain range.
2. Plants added oxygen to Earth’s ancient atmosphere through photosynthesis.
3. Oxygen is the most common gas in Earth’s atmosphere.
4. The troposphere’s ozone layer protects organisms from the Sun’s harmful rays.
5. The mesosphere and thermosphere protect Earth from meteorites.
6. All weather happens in Earth’s exosphere.
7. Air pressure decreases with height in the atmosphere.
8. Temperatures in the troposphere decrease with altitude.
9. The thermosphere is the atmospheric layer farthest from Earth.
10. Auroras occur when ions from the Sun strike air molecules, causing them to emit vivid
colors of light.
Mo9-L3: Lesson Review Quiz (Matching)
Direction: On each line, write the term from the word bank that correctly completes each sentence.
Not all terms are used.
auroras decreases higher exosphere increases
lower mesosphere nitrogen oxygen ozone
photosynthesis thermosphere troposphere water vapor
1. occur when ions from the Sun strike air molecules.
2. Mountain climbers often carry oxygen because air pressure with altitude.
3. The oxygen in Earth’s atmosphere is a product of .
4. is the most abundant gas in Earth’s atmosphere.
5. in the stratosphere absorbs harmful ultraviolet rays from the Sun.
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