Rock Cycle
What is a series of processes in which one form of rock changes into another?
Rock Cycle
What are rocks made of?
minerals
What type of rock is formed when rocks are broken down into smaller pieces by dissolving in water?
Sedimentary
Name the two types of weathering
Physical and chemical weathering
Name of the supercontinent that formed 300 mya
Pangaea
Weathering and erosion together with compaction and cementation of sediments can change igneous rock into _ rock?
Sedimentary
True or False: Rocks can be made of more than one mineral?
True
What type of rock forms from cooling down magma?
Igneous
What kind of weathering is caused by glaciers?
Freeze-thaw weathering
450 mya which continent did the British Isle broke off from?
Gondwana
Extreme heat and pressure can change sedimentary rocks into which type of rocks?
Metamorphic
What are the fragments that make up rocks called?
Grains
What are tiny rock fragments or materials that settle out of air or water called?
Sediments
The process in which rocks break off layer by layer because of pressure
Exfoliation
Which continent did dinosaurs roam freely?
Pangaea
When magma cools, it forms which type of rock?
Igneous
What are some physical properties of rocks?
Hardness, streak, luster, brittleness, color, size, crystal habit (shape), etc.
What type of rock forms from solid, pre-existing rock?
Metamorphic
What is weathering?
The process of rocks breaking down by the action of things in the environment
(Similar answers can be accepted)
What appeared first during Precambrian eon?
Soft-bodied animals
Metamorphic rock can melt due to high temperatures underground and form which molten material?
Magma
Name 4 other elements in feldspar other than silicon and oxygen
Aluminium, Sodium, Calcium and Iron
Slate
Explain how rain causes chemical weathering.
Rain is slightly acidic and it dissolves carbon dioxide from the air which reacts with the calcium carbonate in limestone, that in turn, dissolves the rock
Explain why continents of 550 mya no longer exist today
The continents no longer exist because the plates moved around, joined together and broken apart over many millions of years and it is still happening today