Science 2024 Main

Front

What happens to wax when it cools down in cold water?

Back

The wax changes from a liquid to a solid as it gives off heat to its surroundings.

Front

What is a major threat to the North Atlantic right whale population?

Back

The environment changes faster than right whale populations can adapt.

Front

What evidence from rock layers supports the idea that Earth has changed over geologic time?

Back

Some rock layers contain fossils of plants, and other rock layers contain fossils of marine animals.

Front

Why does the Moon appear to move eastward in the night sky?

Back

The Moon revolves around Earth as Earth revolves around the Sun.

Front

Why does Saturn take longer to orbit the Sun than Earth?

Back

Saturn is farther from the Sun.

Front

What is a phase change in matter?

Back

A phase change is the transition of matter from one state (solid, liquid, gas) to another.

Front

What is the definition of a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What is the role of gravity in planetary orbits?

Back

Gravity is the force that keeps planets in orbit around the Sun.

Front

What is the difference between a solid and a liquid?

Back

A solid has a fixed shape and volume, while a liquid has a fixed volume but takes the shape of its container.

Front

What is the significance of studying rock layers?

Back

Studying rock layers helps scientists understand Earth's history and the changes it has undergone.