History of the Earth
The Geologic Time Scale.
What does the cell wall do for plant cells?
Cell walls help plants to maintain their shape.
What is the rock cycle?
The rock cycle is the interaction between the upper layer and the mantle and the bottom layer of the crust that helps form the material for new rocks.
According to the Geologic Time Scale, in what era and period do humans exist?
Humans exist in the Cenozoic Era and the Quatenary Period.
What is the function of the nucleus?
The nucleus acts as the cell's brain. It also stores genetic information (DNA) of the organism.
What is weathering and which layer of the Earth would weathering occur?
Weathering is the process of which wind, water, ice, or organisms break larger pieces of rock into smaller pieces. Weathering would occur on the Earth's crust.
According to the Geologic Time Scale, how old is the Earth?
According to the Geologic Time Scale, Earth is 4.6 billion years old.
Other than the cell wall, what organelle does a plant cell have that animal cell does not have?
Plant cells also have chloroplasts.
What are the names of the layers of the Earth in order?
Crust, Mantle, Outer Core, and the Inner Core.
When using rock strata and the fossil record to organize Earth's history, its important to remember what findings?
The oldest layers are near the bottom of the the rock strata.
What is the function of the chloroplast in plant cells?
Chloroplast contain the pigment that makes plants green and it allows plants to undergo photosynthesis.
What causes sedimentary rocks to form?
Sedimentary rocks form from weathering and erosion. Sedimentary rock (newest rocks) are the only type of rock that creates rock strata as a part of the rock cycle. (see pg. 69)
This is an example of relative time.
What is photosynthesis?
Photosynthesis is the metabolic process of converting solar energy from the sun into usable chemical energy or food for the plant.
What are the steps in the rock cycle? (complete pg. 68)
Magma, igneous rock, sediments, sedimentary rock, metamorphic rock.