Igneous Rocks
Why are these types of rocks called 'igneous'?
Igneous means fire. Igneous rocks come from magma which is hot like fire.
Very small pieces of rock are called ..............
sediments
Metamorphic rocks form when existing rocks are changed by heat and/or pressure.
A. True
B. False
True
Name the process that creates igneous rocks
cooling down
freezing
crystallization
List three main types of soil.
Sandy soil
Clay soil
Loam
An intrusive igneous rock forms when ..................
magma cools down inside the Earth's crust.
Heat and ice break up rocks in a process called .............
weathering
Marble is a metamorphic rock made from........
Limestone
Name the process that creates sedimentary rocks.
weathering and erosion /
sedimentation
how well water moves through the soil and how easily excess water can escape is called .......
a. evaporation
b. drainage
c.solidifcation
b. drainage
An example of extrusive igneous rock is
basalt, pumice, tuff
a fossil where the bones of the whole animal are preserved in minerals is ...................
cast
Quartzite is formed when sandstone goes through extreme .................
a. heat
b. pressure
Name the two processes that create metamorphic rocks.
heat and pressure
If you test the effect of different types of soil in the growth of a potato plant, what will be your control variable?
-the amount of sunlight
-the amount of nutrients
-the amount of water
-the potato plant
-the space for planting
What causes the crystals in intrusive Igneous rocks to be large?
magma cooling down slowly
How can you decide if a sedimentary rock is shale or limestone?
You could scratch shale by hands and leave marks.
Both metamorphic and igneous rocks are crystalline. How would you know if a rock is metamorphic, not igneous?
If the crystals are banded or in stripes, it's a metamorphic rock.
Name the process that changes back an igneous rock into magma.
melting
Why is the control variable, like the same volume of water added to each type of soil important?
To keep the test fair.
How can you tell if a rock is an extrusive igneous rock?
They are crystalline, but the crystals are too small to see with the naked eye.
Two of the most important features of sedimentary rocks are: ...................
2. they are mostly one colour.
3. they are not crystalline.
Why do metamorphic rocks have bands of crystals?
because of pressure.
Describe two changes that can happen to sedimentary rocks in the rock cycle.
2. weathering and erosion to make new sedimentary rocks.
If you test the effect of different types of soil on the growth of a potato plant, what will be your dependent variable?
the height of each potato plant in cm.