This rock is made from layers of sand that have been pushed down and compressed over a long period of time
What is sandstone?
100
This size of crystal forms when magma cools slowly underground
What are large crystals
100
This is one type of metamorphic rock
What is marble
100
This is what transports pieces of rock big and small, helping to create layers of sediment
What is water
100
Extrusive igneous rock can have this physical characteristic. Just look at obsidian
What is shiny or glass like
200
Layers of seashells that collect on the bottom of the sea floor begin to compress and push down on top of each other, and after millions of years, this rock is created.
What is Limestone
200
This is a type of extrusive rock that is a dark color
What is Basalt
200
Metamorphic rock is made of these two types of rocks
What are igneous and sedimentary rock
200
This is the word to describe when weathering breaks down mountains or big rocks into piles of smaller rock and pebbles
What is Erosion
200
Sometimes when a large amount of magma is close to the surface and is creating a lot of pressure on earth's crust, this may form.
What is a volcano
300
This happens when natural forces like wind and rain begin to break down big rocks into smaller and smaller pieces
What is Weathering
300
The word to describe magma that has reached the surface
What is lava
300
Metamorphic rock that is deep enough and hot enough will turn into this
What is magma
300
This is the fate of sedimentary rock that is far below the earth's surface, where heat and pressure act on it
What is metamorphosis
300
Layers of loose material are also known by this word
What is strata
400
This sedimentary rock is formed when layers of mud and silt start to compress on the bottom of the sea floor over millions of years.
What is shale?
400
This is a type of intrusive rock
What is Granite
400
This is what happens to the straight layers in rock when they metamorphasize
What is folding or bend
400
If pieces of rock are small enough, say grain size, they may be carried away by this.
What is wind
400
The rock cycle is a slow process which takes this amount of time to completely go through.
What is millions of years
500
Volcanic tuft is a sedimentary rock formed when these two things are blown out of volcanoes and settle to form layers that compress over time.
What is volcanic dust and ashes
500
This is the type of color that an intrusive igneous rock would be
What is light coloured, or white, or pink, or grey
500
It takes time and a lot of these two things (not the rocks) to make metamorphic rock
What are pressure and heat
500
Thousands of years ago, when things were a little colder, these huge slow moving mounds of ice carved up the land, and broke down solid rock. They would transport tons of rock to the sea.
What are glaciers
500
This is the type of rock you will never find fossils in