1st NW Study Guide Aid - 2024

1. Luke is studying minerals in his science class. He is interested in determining how to identify minerals and the role of a streak test. Why is a streak test important in identifying a mineral?

• It will determine if the mineral is brittle.
• It will determine if the mineral can be turned into a powder.
• The streak color will differ even if the minerals are the same.
• The streak color will always be the same even if the mineral is different colors.

2. Which kind of rock is formed when volcanic lava cools?

• sedimentary
• metamorphic
• igneous
• magma

3. Which of the following is evidence to support the Theory of Continental Drift?

• fossils of the same organism found in both Georgia and Alabama
• mountain ranges of Canada continuing into the United States
• Coal fields of California and Alaska matching up with each other
• Africa and South America lining up like two puzzle pieces that go together.

4. Extrusive rocks are formed by

• lava cooling on Earth's surface
• pressure inside Earth
• magma cooling below the Earth's crust
• tidal deposits of sediment

5. Which of the following is NOT a characteristic of a mineral?

• naturally occurring
• definite composition
• solid
• organic

6. Fossils of the fern plant Glossopteris have been found in Africa, Australia, South America, and Antarctica. How do scientists believe this happened?

• The wind blew seeds across the oceans from continent to continent.
• The fern developed independently on each continent.
• The continents were at one time joined together and then moved apart.
• The fern had adaptions to survive the different environments of the continents.

7. The density is highest in the Earth's

• crust
• upper mantle
• lower mantle
• core

8. Your teacher has set up an investigation for class today. The following materials are on the science lab table: a piece of unglazed white or black porcelain, iron pyrite, hematite, mica, talc, halite, and magnetite. Which property of minerals will you be testing for?

• fracture
• density
• streak
• hardness

9. When magma reaches the surface, it becomes

• gas
• steam
• energy
• lava

10. Rocks formed on the Earth are generally classified as sedimentary, metamorphic, or igneous. On which basis are these classifications made?

• where the rocks are formed
• how the rocks were formed
• the color or shape of the rocks
• the chemical composition of the rocks