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Science: Middle School: Grades 6, 7 and 8 Quiz - Soil and Rocks (Questions)

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The scientific study of rocks is called petrology, and petrology is an essential component of geology. Diamond is the hardest natural substance found on Earth, and supposedly a girl's best friend!

Test your knowledge in our Science quiz on Soil and Rocks.

Which of the following is the BEST definition of weathering?

[ ]	Breaking up of rocks at the surface
[ ]	Change to liquid caused by intense heat
[ ]	Covering and squashing layers to form rock
[ ]	Moving of rocks from one place to another

Which one of these is NOT a component of soil?

[ ]	Humus
[ ]	Magma
[ ]	Rock particles
[ ]	Water

Sandstone is grainy and crumbly and may contain fossils. Its rock type is.....

[ ]	Igneous
[ ]	Metamorphic
[ ]	Sedimentary
[ ]	Soft

Which type of rock has been formed from hot liquid rock called magma?

[ ]	Igneous
[ ]	Metamorphic
[ ]	Mixture
[ ]	Sedimentary

Which type of soil will have good drainage, meaning water runs through quickly?

[ ]	Clay
[ ]	Loam
[ ]	Sandy
[ ]	Silt

Which of the following is a metamorphic rock?

[ ]	Basalt
[ ]	Limestone
[ ]	Mudstone
[ ]	Slate

Granite is an intrusive igneous rock. Which best describes its characteristics?

[ ]	A hard rock, large crystals due to slow cooling of magma
[ ]	A hard rock, small crystals due to fast cooling of lava
[ ]	A soft rock, large crystals due to slow cooling of magma
[ ]	A soft rock, small crystals due to fast cooling of magma

Which one of these describes a metamorphic rock?

[ ]	A black rock formed on the Earth's surface
[ ]	A glass type rock formed by volcanoes
[ ]	A rock formed from grains of sand squeezed together
[ ]	A white rock, showing layers formed by heat and pressure on chalk or limestone

Which statement about the rock cycle is true?

[ ]	Erosion is the weathering and carrying away of rock sediment
[ ]	Freeze thaw is cold weather
[ ]	Lava is molten rock inside the Earth
[ ]	Transportation is the covering and squashing of layers

10.

Which rock is composed mainly of calcium carbonate?

[ ]	Chalk
[ ]	Pumice
[ ]	Quartz
[ ]	Sandstone

Science: Middle School: Grades 6, 7 and 8 Quiz - Soil and Rocks (Answers)

Which of the following is the BEST definition of weathering?

[x]	Breaking up of rocks at the surface
[ ]	Change to liquid caused by intense heat
[ ]	Covering and squashing layers to form rock
[ ]	Moving of rocks from one place to another

Which one of these is NOT a component of soil?

[ ]	Humus
[x]	Magma
[ ]	Rock particles
[ ]	Water

Magma is liquid rock

Sandstone is grainy and crumbly and may contain fossils. Its rock type is.....

[ ]	Igneous
[ ]	Metamorphic
[x]	Sedimentary
[ ]	Soft

70% of all rocks on Earth are sedimentary

Which type of rock has been formed from hot liquid rock called magma?

[x]	Igneous
[ ]	Metamorphic
[ ]	Mixture
[ ]	Sedimentary

Igneous comes from the Greek word meaning fire

Which type of soil will have good drainage, meaning water runs through quickly?

[ ]	Clay
[ ]	Loam
[x]	Sandy
[ ]	Silt

Which of the following is a metamorphic rock?

[ ]	Basalt
[ ]	Limestone
[ ]	Mudstone
[x]	Slate

Igneous rock, Basalt, is the most common rock on Earth

Granite is an intrusive igneous rock. Which best describes its characteristics?

[x]	A hard rock, large crystals due to slow cooling of magma
[ ]	A hard rock, small crystals due to fast cooling of lava
[ ]	A soft rock, large crystals due to slow cooling of magma
[ ]	A soft rock, small crystals due to fast cooling of magma

Aberdeen is known as the Granite City

Which one of these describes a metamorphic rock?

[ ]	A black rock formed on the Earth's surface
[ ]	A glass type rock formed by volcanoes
[ ]	A rock formed from grains of sand squeezed together
[x]	A white rock, showing layers formed by heat and pressure on chalk or limestone

Metamorphic comes from Greek words meaning 'change' and 'form'

Which statement about the rock cycle is true?

[x]	Erosion is the weathering and carrying away of rock sediment
[ ]	Freeze thaw is cold weather
[ ]	Lava is molten rock inside the Earth
[ ]	Transportation is the covering and squashing of layers

10.

Which rock is composed mainly of calcium carbonate?

[x]	Chalk
[ ]	Pumice
[ ]	Quartz
[ ]	Sandstone

White cliffs of Dover are chalk (pure calcium carbonate)