Question

6. How is heat transferred from the Sun?
A. through radiation only
B. through convection only
C. through convection and radiation
D. through conduction and convection
7. What is the basis for the division of the layers of atmosphere
surrounding the Earth?
A. changing temperature B. changing composition
C. changing amount of O2 D. changing weather patterns
8. What is the correct order of Earth's atmospheric layers from
the bottom to the top?
A. Exosphere, Thermosphere, Troposphere, Stratosphere,
Mesosphere
B. Mesosphere, Stratosphere, Exosphere, Thermosphere,
Troposphere
C. Stratosphere, Troposphere, Thermosphere, Mesosphere,
Exosphere
D. Troposphere, Stratosphere, Mesosphere, Thermosphere,
Exosphere
9. Why is the presence of ozone above the troposphere
important for the survival of living things on Earth?
A. helps in cloud formation
B. warms the Earth's surface
C. makes jet flying more comfortable
D. offers protection from the Sun's harmful UV rays
10. Why are scientists concerned about the greenhouse effect?
1. No technology will keep the temperature of the Earth
constant.
II. Earth has many desert areas. Planting trees in wider areas is
impossible.
III. Human activities like the burning of fossil fuels and
deforestation increase the greenhouse effect.
IV. The human population is increasing at a rapid rate; more CO2
will be released into the atmosphere due to human activities.
A. I, III B. II, IV C. II only D. IV only​

Answer 1

Resposta:

6-a

Explicação:

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