Unit 5 Solar System and Earth's Movements

What is responsible for the cycle of daylight and darkness?

• The Earth's orbit

• The Earth's rotation

• The Moon's phases

• The Sun's position

What happens when the Earth completes one rotation?

• A month passes

• A year passes

• A day passes

• A week passes

What is the effect of Earth's rotation on the Moon and stars?

• They remain stationary

• They rise in the west and set in the east

• They rise in the east and set in the west

• They disappear

What happens to the northern half of the Earth during summer in the Northern Hemisphere?

• It is pointed away from the Sun

• It is pointed toward the Sun

• It experiences shorter days

• It experiences no change

Which ultraviolet light reaches the Earth's surface?

• UVC

• UVB

• UVA

• None

What is the greenhouse effect?

• Cooling of the Earth

• Warming of the atmosphere by trapping heat

• Reflection of sunlight

• Absorption of visible light

What percentage of solar radiation is in the UV wavelengths?

• 44%

• 7%

• 50%

• 25%

By how much have methane levels increased due to human activity?

• 1.5 times

• 2 times

• 2.5 times

• 3 times

What happens to the part of the Earth tilted away from the Sun?

• It experiences a warm season

• It experiences a cool season

• It experiences no change

• It experiences extreme weather

What is the significance of the Tropic of Cancer during the summer solstice?

• It marks the start of winter

• It is where the Sun's rays hit most directly

• It is the coldest point on Earth

• It marks the start of spring