Science Topic 3 Test Review Flashcards
Is molten rock more or less densen than cooler solid rock?
Less dense
As you travel deeper into the Earth, what happens to temperature and pressure?
Both temperature and pressure increases
What two processes turn layers of loose sediment into hard sedimentary rock?
Compaction and Cementation
Why do rocks sink and rise in the mantle during convection currents?
Rock is heated. Hot rocks rise and cool rocks sink.
What is the correct order in which sedimentary rocks form?
Weathering & Erosion- Transportation-Deposition- Compaction-Cementation
What happens to material as it moves through the stages of the rock cycle?
The same matter is recycled over and over.
What rating scale does the Mohs hardness scale follow?
1-10
What type of test Is a geologist performing if they rub a mineral on a white tile and observe the color left behind?
Streak Test
What do scientists use to make observations and inferences as to what below the crust of the Earth?
Seismic Waves
What are some properties of minerals?
Luster, color, crystal structure, density
When using Mohs hardness scale, any mineral that has a score of 4 can scratch any mineral with a score of what?
3 or less
What does extrusive in the term extrusive igneous rock mean?
It formed at the surface near a volcano and cooled very quickly.
What process could cause a metamorphic rock to become a sedimentary rock?
Weathering & Erosion
What causes an intrusive igneous rock to become a metamorphic rock?
Heat and Pressure
What happens to a rock after it becomes weathered?
It becomes sediment
What type of rock would look like a bunch of seashells cemented together?
Sedimentary
What type of rock would fossils be found in and why?
Sedimentary Rock because fossils would melt when Igneous and Metamorphic Rock would be formed.
What layer of Earth is believed to be responsible for Earthś magnetic field?
Outer Core
Volcanoes reach below the first layer of the Earth. What is the 2nd layer of the Earth?
Mantle
Under what conditions do igneous rocks become metamorphic rock?
Heat and Pressure
Do rocks always go through the same steps when they go through the rock cycle? Explain.
No, rocks do not always follow the exact same steps when going through the rock cycle.
