The Atmosphere

What is the primary gas found in the Earth's atmosphere?

• Oxygen (about 21%)

• Carbon Dioxide (about 0.04%)

• Nitrogen (about 78%)

• Argon (about 0.93%)

What is the term used to describe the motion of the Earth around the Sun?

• Rotation

• Revolution

• Orbiting

• Translation

What is the greenhouse effect?

• The cooling of the Earth's surface due to the reflection of sunlight.

• The warming of the Earth's surface due to trapped heat by greenhouse gases.

• The process of photosynthesis in plants.

• The increase in Earth's temperature due to volcanic activity.

What is the term for the boundary between the troposphere and the stratosphere?

• Tropopause

• Stratopause

• Thermopause

• Mesopause

What phenomenon causes the seasons on Earth?

• The distance of the Earth from the Sun

• The tilt of the Earth's axis and its revolution around the Sun

• The rotation of the Earth on its axis

• The gravitational pull of the Moon

What season occurs when the area you live in tilts away from the sun?

• Spring

• Summer

• Winter

• Autumn

What percentage of the Sun's energy is reflected back into space?

• 20%

• 25%

• 30%

• 35%

What is the layer of atmosphere closest to the Earth called?

• Stratosphere

• Mesosphere

• Troposphere

• Thermosphere

What is the term for the layer of the atmosphere where weather occurs?

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

What is the term for the movement of air in the atmosphere?

• Atmospheric circulation

• Airflow dynamics

• Wind patterns

• Atmospheric pressure