A wave's frequency is 2 Hz and its wavelength is 4 m. What is the wave's

speed?

Which best explains how heat plays a role in the movement of materials within Earth's interior? a.) Hot material near Earth's surface is more dense and sinks, and when it cools, it becomes less dense and rises. b.

Define fragment, and give one example of a fragment and two possible corrections.

Which is produced when a warm air mass pushes a colder air mass?

Soft rocks found along the coast of East Africa are known as

What part of the united states does not rest on the north american plate?

Why do the North and South pole experience seasons differently than the rest of the planet? Why do they have periods of continuous daylight or continuous darkness?

According to the International Astronomical Union, which of the following is one of the criteria for an object to classified as a Planet? Select all that apply.

What physical features are the five largest cities in the u. S. Near?

Because of his failed economic plan, Mao Zedong later opened China up to foreign trade. True False

Your friend tells you that our orbit is so special that it is at just the right distance from the sun for us to be at the right temperature for life to flourish. He says that if we were even ten miles closer to the sun, we would burn up.