Igneous Rocks!
Tuesday 23/8
Question 1 (definitions). Answer the following questions using full
sentences
What is an igneous rock?
Igneous rocks are rocks made from the cooling and solidification of volcanic molten rock.
What is magma made of?
Magma is made of molten rock, which includes a variety of minerals.
What is the difference between magma and lava?
The main difference between magma and lava is its location in relation to the Earth’s surface: magma is
below the surface, lava is above. Their composition is the same.
Question 2:
Draw a labelled diagram of a volcano showing the locations of the following terms:
-
Volcano
-
Magma
-
Magma chamber
-
Intrusive Igneous Rocks
-
Lava
-
Extrusive Igneous Rocks
lava
Volcano
magma
Magma Chamber
Question 3: Fill in the gaps:
Word Bank: water, lava, magma, fast, course, small, crystals, warmer, long, smooth
[[5
Intrusive igneous rocks are made of magma that has not reached the surface. These rocks usually have a
course texture and large, very visible crystals. The magma in intrusive rocks take a long time to cool, since
it is being formed underground the temperature is warmer than above the surface.
Extrusive Igneous Rocks are made of lava that is above the surface. These rocks typically have a smooth
texture, and small, sometimes invisible crystals. The lava cools at a very fast rate due to the cooler
conditions above the surface, where it can also make contact with water.
Question 4: Research the following igneous rocks using the internet. Using pictures or information, find the
missing characterises
Rock Name
Crystal Size
Texture (Smooth or
Intrusive or
(Large or Small)
Course)
Extrusive
Granite
Large
Course
Intrusive
Basalt
Small
Smooth
Extrusive
Andesite
Small-medium
Smooth-medium
Extrusive
Diorite
Large
Course
Intrusive
Scoria
small
Smooth
Extrusive
And in case you finish early…