The inner most layer of the earth is

• solid
• liquid
• gas
• plasma

Which of the following is NOT a characteristic that all minerals must have?

• naturally occurring
• organic
• solid under normal conditions
• fixed chemical composition

Which characteristic of a mineral is the most easily observed but the least reliable?

• color
• luster
• streak
• hardness

Which mineral property is determined by rubbing it on a rough surface?

• color
• luster
• streak
• hardness

The Moh’s scale shows the range of which mineral property?

• color
• luster
• streak
• hardness

Which of the following is NOT true of mining?

• It will likely become more costly to mine in the future.
• We can reduce our need to mine by recycling mineral-containing materials.
• Minerals are used to produce household items such as electronics and cosmetics.
• The environmental impact of mining will likely remain the same in the future.

Plates move away from each other, allowing magma to rise and cool in the gap, creating new land.

• Convergent
• Divergent
• Transformative
• Conservative

Heat from the core of the earth causes the mantle to move with what

• hydroelectric power
• plate instability
• convection currents
• deep sea currents

When two plates are moving towards each other, this boundary is called what?

• divergent boundary
• convergent boundary
• transform boundary
• fault

The point on the surface of earth where we feel an earthquake directly above the release of energy is called what?

• Focus
• Epicenter
• Waves
• Fault