Front

Why is the salinity different in a bay than a river?

Back

A bay has higher salinity than a river because it is closer to the ocean.

Front

What part of the ocean is ideal for trawl nets?

Back

The continental shelf

Front

What role do wind and temperature play in ocean dynamics?

Back

They lead to the formation of ocean currents.

Front

What is one way an erupting volcano can alter the Earth's surface?

Back

It creates new land by depositing lava.

Front

The theory of plate tectonics is the idea that ---

Back

Earth's crust is divided into many separate moving pieces.

Front

What would cause this outdoor statue to be broken and crumbling?

Back

Over the years, the stone has been weathered by wind and rain.

Front

What kind of rock would a scientist expect to find in the Grand Canyon, which has many layers of rock formed over millions of years from compacted sediments?

Back

Sedimentary

Front

What can we learn from the presence of marine fossils in the mountains of western Virginia?

Back

There was once a sea covering the area of western Virginia.

Front

What type of rock is this? It was formed by magma, cooling and hardening.

Back

Igneous

Front

Why is it warmer in Virginia in the summer than it is in the winter?

Back

The Northern Hemisphere tilts towards the sun in the summer and away from the sun in the winter.