Home > Science > The environment, the Earth and the universe > The rock cycle
Which of the following is the order for forming sedimentary rocks?
sedimentation - cementation - compaction
compaction - sedimentation - cementation
sedimentation - compaction - cementation
Only one of these rocks is a sedimentary rock. Which one?
Where are the oldest layers of rock usually found in a cliff made from sedimentary rock?
at the top
in the middle
at the bottom
What is magma?
salt crystals in sedimentary rock
bubbles of gas
What does the presence of tiny crystals in a piece of igneous rock tell you about it?
The molten rock cooled very quickly.
The molten rock cooled very slowly.
The molten rock cooled deep underground.
Which type of rock never contains fossils?
Which one of these rocks is an igneous rock?
Which statement about metamorphic rocks is correct?
They are formed when rocks are heated until they melt.
They are only formed from heated sedimentary rocks.
They are formed from all types of rock.
Which statement about the crystals in metamorphic rocks is correct?
They are small if the molten rock cooled quickly.
They are large if the molten rock cooled slowly.
They are often arranged in layers.
Which metamorphic rock is formed from limestone?
Which of these is not an example of physical weathering?
acid rain falling on limestone
wind blowing sand onto a rock
What happens to pieces of rock as they are transported by a river?
They get larger and more jagged.
They get smaller and more rounded.
They get smaller and more jagged.