Earth History Final

Which of the following describe characteristic of a mineral?

• It occurs naturally.
• It is solid.
• It has a definite composition.
• It is organic
• It has a crystalline internal structure

When you see an igneous rock that has large crystals, what does that tell you about how the rock was formed?

• it formed as an intrusive igneous rock
• it formed as an extrusive igneous rock
• It formed due to heat and pressure

Which of the following is a sedimentary rock?

• limestone
• basalt
• granite
• none of the listed are sedimentary
• all are sedimentary

What layer would the river be at about 3 million years ago?

• Granite
• Kaibab limestone
• Hermit shale

What would the Grand Canyon look like about 3 million years ago?

• Same as today
• Not as deep but much wider
• Not as deep and not as wide

Look at the picture below. Some students are using acid to test rock samples they collected... What are the students testing for?

• Calcite
• Salt
• precious metal
• oxygen

Which of the following is true about the geological time scale?

• It arranges geological events in order from oldest to youngest.
• It is a scale used by geologists to measure the diameter of rocks.
• It describes the history of Earth in millions of years.
• It shows geological time divided into era and periods.

What are bigger or longer, in terms of geological time?

• Eras
• Periods

Fossils that help geologists determine the age of the rock layers are called?

• prehistoric fossils
• paleozoic fossils
• ancient fossils
• index fossils

Which of the following are "YOUNGER" than X? ...Pick all that apply.

• F
• J
• B
• R
• S