Earth and Space Science

why do we have 2 low tides and 2 high tides a day?

• the gravitational forces of the sun and moon work against each other

• there are two tidal bulges

• the moon rises about 50 minutes later each day

• the moon orbits earth in the same direction that Earth rotates

when comparing our solar system to the universe, the universe is...

• younger and larger

• older and smaller

• younger and smaller

• older and larger

What is the area from the surface of Earth down to its center called?

• Biosphere

• Atmosphere

• Hydrosphere

• Geosphere

How did this terrain feature form?

• It formed by a meander of a stream that has been cut off.

• It formed from a glacier that scoured out the land.

• It is the result of a flood.

• It is the result of eutrophication.

What are the two main elements in the sun, and what process occurs to "produce" energy?

• Carbon and Oxygen; fusion

• Carbon and Oxygen; fission

• Hydrogen and Helium; fusion

• Hydrogen and Helium; fission

Because the earth is spinning on its axis, the global winds appear to curve. This is known as the __________ ________.

• Coriolis Effect

• Greenhouse Effect

• Climate Effect

• Atmosphere Effect

Approximately, what percent of the Earth's surface is covered with water? 

• 3%

• 30%

• 70%

• 97%

Which of the following contributes to climate change(you may select more than one)

• Volcanoes

• Deforestation

• Burning Fossil Fuels

• Red Tide

Identify this object.

• a white dwarf star

• the planet Jupiter

• the Eskimo nebula

• the Pillars of Creation in the Eagle Nebula

The Crab Nebula is actually:

• a planetary nebula.

• a white dwarf star.

• a red supergiant star.

• a supernova remnant.