Chapter 7 - The Sun and Earth

earth_science

Unit D - The Sun and Its Family

Chapter 7 - The Sun and Earth

Explore the Sun's affect on seasonal and daily cycles and how this, in turn, affects life on Earth.

What's the Angle?

Activity

What's the Angle?

Why is there such a dramatic temperature change between the equator and the South Pole? Explore all the angles of sunlight with a few thermometers and a heat lamp.

seasonal cycle_thumb

Seasonal Cycle

If the Earth turns all the way around every 24 hours, then why are some days longer than others? And why do we have winter and summer? See the answers for yourself—in a matter of seconds.

Day & Night Cycles

Article

Day & Night Cycles

In Antarctica, the Sun never sets during the summer or rises during the winter. But do you know why? Learn the answer from a researcher who summers in the land of constant daylight.