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Rocks, Soils, and Fossils
Rocks, Soils, and Fossils
18
Geology
2nd Grade
04/27/2014

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Cards

Term
Geologist
Definition
A scientist who studies rocks to learn more about the earth.
Term
Rock
Definition
Solid Earth material made of minerals
Term
Mineral
Definition
A solid that is found in nature and is made of only one kind of material.
Term
Property
Definition
Something that can be observed, that can be used to describe an object (color, size, shape, hardness, luster).
Term
Hardness
Definition
How hard a mineral is - a scratch test shows the hardness of a mineral.
Term
Spring Scale
Definition
A tool used to measure mass and weight.
Term
Mass
Definition
A measure in the amount of "stuff in an object" - how much it weighs.
Term
Weathering
Definition
Breaking down rocks into smaller pieces.
Term
Erosion
Definition
Happens when weathered rock and soil gets moved from one place to another.  Moving water, wind, and glacier can all cause erosion.
Term
Soil
Definition
A mixture of weathered rock and decayed plants and animals.  Gives plants nutrients to grow.
Term
Fossil
Definition
The remains and traces of dead plants and animals presrved in rock.
Term
Cast Fossil
Definition
An exact copy of an organism that made an imprint - the imprint was filled with sediments that turned into a solid rock.
Term
Mold Fossil
Definition
An impression left of an organism in sand or mud that later turns to rock.
Term
What are 3 types of rocks?
Definition

igneous

metamorphic

sedimentary

Term
Name 3 different types of soil
Definition

loam

humus

clay

Term
What is the difference between a cast and a mold fossil?
Definition

A cast fossil is an exact copy that made an imprint.

A mold fossil is an impression left on an organism that later turns to rock.

Term
What is the difference between erosion and weathering?
Definition

Erosion is when weathered rock & soil get moved around.

Weathering is the breaking down of rocks into smaller pieces.

Term
What are 2 properties of a rock?
Definition

Luster

hardness

color

size

shape

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