Earth’s Tilt & Movement
What is the angle of Earth’s tilt?
23.5°
What is solar noon?
When the sun is at its highest point in the sky
What happens during an equinox?
Day and night are equal
When the Northern Hemisphere has summer, what does the Southern Hemisphere have?
Winter
What determines how intense sunlight is?
The angle of the sun’s rays
What is Earth’s axis?
An imaginary line the Earth spins on
What happens to temperature when sunlight is more direct?
Temperature increases (warmer)
What happens during the summer solstice?
Longest day of the year
When the Northern Hemisphere is tilted away from the Sun, what season is it?
Winter
What happens when sunlight is more concentrated?
Higher temperatures
What motion causes Earth to move around the Sun?
Revolution
What angle of sunlight is most concentrated?
High angle (close to 90°)
What happens during the winter solstice?
Shortest day of the year
When the Northern Hemisphere is tilted toward the Sun, what season is it?
Summer
Why is summer warmer than winter?
More direct sunlight and longer days
How long does it take Earth to revolve around the Sun?
365 days
What type of sunlight spreads energy over a larger area?
Low-angle sunlight
Which latitude gets direct sunlight during the summer solstice?
Tropic of Cancer
Why do hemispheres have opposite seasons?
They are tilted in opposite directions relative to the Sun
Why is winter colder than summer?
Less direct sunlight and shorter days
What is the MAIN reason Earth has seasons?
Earth’s tilt
Why does low-angle sunlight result in cooler temperatures?
Energy is spread out over a larger area
Which latitude gets direct sunlight during the winter solstice?
Tropic of Capricorn
Which pole is tilted away from the Sun during Northern Hemisphere winter?
North Pole
Explain how sunlight angle affects temperature.
More direct angle = more concentrated energy = warmer; low angle = spread out energy = cooler