Introduction to the Earth

Which of the following is NOT evidence that the Earth is round?

• A) Ships sailing away do not fall off the Earth

• B) Lunar Eclipses have a curved shadow

• C) The position of Polaris (North Star) changes with latitude

• D) The Earth is flat when viewed from space

What is the layer of gases surrounding the Earth called?

• Lithosphere

• Atmosphere

• Hydrosphere

• Biosphere

Fill in the blank: The outer rigid layer of the Earth is called the _________.

• Lithosphere

• Mantle

• Core

• Asthenosphere

Match the part of the Earth's exterior with its description:

• Living organisms on Earth

• Hydrosphere

• Layer of gases

• Biosphere

• The outer rigid layer

• Lithosphere

• Water on Earth's surface

• Atmosphere

Which part of the Earth's interior is the thick solid layer where convection currents occur?

• Crust

• Mantle

• Outer Core

• Inner Core

Fill in the blank: The very center of the Earth, which is mostly iron and nickel and entirely solid, is called the _________.

• Inner Core

• Mantle

• Crust

• Outer Core

What is the formula for density?

• Density = mass/volume

• Density = volume/mass

• Density = mass x volume

• Density = mass + volume

Which of the following is NOT a characteristic of minerals?

• A) Naturally occurring

• B) Crystalline solid

• C) Definite chemical composition

• D) Organic

Identify minerals by their ________, which is the color of the powder form.

• streak

• luster

• hardness

• cleavage

Luster is used to determine if a mineral is metallic or nonmetallic.

• True

• False