NST Flashcards
What is a Sedimentary rock
A rock made of sediments
What is an Igneous rock
A rock that is made of cooled lava or magma
What is a Metamorphic rock
A rock that has gone through a big change
What is Orbit
The movement of an object in space around another object
What is Axis
The imaginary line from north to south through the center of the Earth
What are rocks
Rocks are solid chunks of one or more minerals
What is metamorphism
When temperature and pressure cause some minerals in the rock to break down and other minerals to form
What is sedimentation
When layers of sediment are compacted and cemented together over time to form rock
What is rotation
The spinning movement of an object around itself
What is topsoil
The layer of soil that lies on the surfaces of the Earth
What is subsoil
The layer of soil that lies underneath the topsoil
What is fertile soil
Soil in which plants can grow
What are the three main groups of soil
Sandy soil, clayey soil and loamy soil
Which type of soil stores the most water
Clayey soil
Which type of soil is best for growing plants
Loamy soil
What is the Crust of the Earth
The surface layer of the Earth
What is the definition of decompose
To break down into smaller parts
What does compacted mean
Tightly packed together
What are sediments
pieces of broken up rock deposited by wind or water
How many layers of soil are there on Earth
5
Which type of soil dries out fastest
Sandy soil
What is under bedrock
Magma
Which type of soil has lots of Humus
Loamy soil
What is soil made of
rocks and organic matter
What is Limestone made of
Calcite
