Grades 6-8

Temperature & Albedo

Article

Temperature & Albedo

Even during the summer months, the temperatures on Antarctica's coast range around freezing. Inland, it's even chillier. Discover the three reasons why this continent is the coldest place on Earth.

Seasonal Cycle

Interactive

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.

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.

Going Deep Under the Sea

Activity

Going Deep Under the Sea

What does it take to send a crew to the bottom of the ocean? A sub with 14-inch-thick walls made of a titanium-steel alloy—and a day of calm seas to ensure smooth diving.

Pressure in the Deep Seas

Article

Pressure in the Deep Seas

How pressurized is the ocean floor? Imagine an elephant standing on your big toe—then apply that pressure to your whole body. But thanks to ALVIN, scientists can make the dive comfortably.

Veronique Robigou

Article

Veronique Robigou

You don't need to leave Earth to find life forms that can exist in the harshest of environments. This marine geologist discusses the exciting research being done at the bottom of the ocean.

Weather Conditions Over the Deep Seas

Article

Weather Conditions Over the Deep Seas

What does it take to send a crew to the bottom of the ocean? A sub with 14-inch-thick walls made of a titanium-steel alloy—and a day of calm seas to ensure smooth diving. 

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How Deep is Deep?

Dive down, down, and down a whole lot more—until you've traveled 2,400 meters to the sea floor. Can you picture how deep that really is? Compare it with the height of famous landmarks, and you will.

Hydrothermal Vent Formation

Article

Hydrothermal Vent Formation

Submarine hot springs, called hydrothermal vents, spew out mineral-rich hot water. What do scientists hope to learn by tracking the temperature variations around these vents for an entire year?

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