Show:
Minerals
Igneous
Metamorphic
Sedimentary
Soil/Erosion
100
What is the difference between rocks and minerals?
Rocks are made of two or more minerals. Minerals are made up of just one substance.
100
What are Igneous rocks?
Igneous rocks are formed when magma cools.
100
What are Metamorphic rocks?
Metamorphic rocks have been changed over time by extreme pressure and heat.
100
What are sedimentary rocks?
Sedimentary rocks are formed by sediment that is deposited over time, usually as layers at the bottom of lakes and oceans.
100
What is soil?
Soil is a mix of broken down rocks and minerals, as well as organic matter (dead plants, animals, bugs...).
200
What is is called when rock is worn away?
Erosion
200
What are the two different types of igneous rocks?
Intrusive (inside the earth) and extrusive (on the surface of the earth).
200
What is the difference between igneous rocks and metamorphic rocks?
Igneous rocks are made by cooling lava, metamorphic rocks have been changed by heat and pressure (not melted).
200
What is the difference between Sedimentary and Metamorphic rock?
Sedimentary rocks are created from sediment in water. Metamorphic rocks are formed by heat and pressure.
200
What is Humus?
Humus is made up of organic material (plants, animals...) it is the vary top layer of soil.
300
What is one characteristic we can observe in minerals?
(answers vary)
300
How can you tell if a rock is intrusive?
Intrusive rocks cool slowly any may have crystals.
300
What do some Metamorphic rocks look like?
Some have stripes.
300
What can you find in some Sedimentary rocks?
fossils
300
What is Topsoil?
A layer of soil that is made of rich materials (organic matter) where plants take most of their nutrients from (it is usually darker in color).
400
What is one characteristic we can observe in minerals?
(answers vary)
400
How can you tell that a rock is extrusive?
Extrusive rocks cool quickly and may have holes in them or appear glasslike.
400
BONUS: What causes erosion?
Water, wind, ice...
400
BONUS: What is streak?
The color a rock/mineral leaves when scraped.
400
What is Subsoil?
Subsoil is the middle layer, it is made of rocks, minerals, and is tightly packed together (plants do not grow well).
500
What is "Luster?"
How light is reflected off a mineral.
500
Challenge: name one type of igneous rock.
obsidian, granite, pumice, basalt...
500
DAILY DOUBLE: Name something that minerals are used in.
toothpaste, pencils...
500
EXTRA: What layer of soil has the largest pieces of rock/minerals?
Bedrock
500
What is Bedrock?
Bedrock is made up of different rocks in different places. (It erodes and eventually becomes topsoil.