Seasons & Tilt
What is Earth’s axial tilt?
23.5
What is Earth’s movement around the Sun called?
Revolution
What happens when sunlight is direct?
Energy is more concentrated
What happens to day length in summer?
Longer
What season occurs when NH tilts toward Sun?
Summer
Do seasons come from distance to Sun?
No
How long is one revolution?
364.25 days
What angle gives least energy?
Indirect
What happens to shadows at low Sun angle?
Longer shadows
What latitude gets direct sunlight at equinox?
Equator
What causes seasons?
Earths Tilt
What is Earth’s spinning motion?
Rotation
Why do high latitudes get less energy?
Energy is more spread out
When are day & night equal?(months)
March and September
When is NH most tilted toward Sun?
June 21st
What latitude gets 24 hr daylight in summer?
Arctic Circle (66.5°N)
What causes day and night?
Earths Rotation
What happens when Sun angle increases?
Energy Increases
What happens to day length in winter?
Shortens
What season is SH on June 21?
Winter
Why are seasons opposite in hemispheres?
Axial Tilt
Degrees Earth rotates per hour?
15
Where is energy most concentrated year-round?
Sun angle at equator during equinox?
90
Why are NY winters cold even when closer to Sun?
Low Sun angle + shorter days |