Rocks, Soils, and Fossils 3rd grade
Flashcard
•
Science
•
KG - University
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is clay?
Back
Clay is a type of soil that is very fine and sticky when wet. It does not drain water well.
2.
FLASHCARD QUESTION
Front
Why is drainage important for planting flowers?
Back
Good drainage helps prevent water from pooling around the roots, which can cause plants to rot.
3.
FLASHCARD QUESTION
Front
What must happen for a fossil to form?
Back
The remains of a dead organism must be buried by layers of soil and rock.
4.
FLASHCARD QUESTION
Front
What is a fossil?
Back
A fossil is the preserved remains or traces of a once-living organism.
5.
FLASHCARD QUESTION
Front
What is the first step in fossil formation?
Back
The first step is that an organism must die.
6.
FLASHCARD QUESTION
Front
What happens to the bones of an organism over time to become a fossil?
Back
Minerals in the water slowly replace the bone, turning it into a rock-like structure.
7.
FLASHCARD QUESTION
Front
What is the hardness scale for rocks?
Back
The hardness scale, known as Mohs scale, ranks minerals from 1 (softest) to 10 (hardest).
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