Types of Rocks
How is an igneous rock formed?
lava cools and hardens.
Name three ways we use rocks and minerals at school.
Building, computers, food, technology, etc.
What is the top layer of soil?
Humus
What is lustre?
shiny or dull
Name the four layers of the earth
Crust, mantle, outer core, and inner core
How is a sedimentary rock formed?
sediments and matter are pushed under water and pushed together into layers.
Describe how rocks are used in the natural environment.
Animals use them in their habitat and for protection. Plants use them for stability.
What is the bottom layer of soil?
Bedrock
Name five ways scientists classify rocks.
size, colour, shape, lustre, hardness, scratch test, magnet test, streak test, etc
Name five parts of a volcano
crater, magma chamber, secondary vent, lava, vent, ash, vent
How is a metamorphic rock formed?
By heat and pressure.
Nature or human? Rocks hide under rocks on the beach for protection from predators.
Nature
What is weathering?
The breaking down or weathering of rocks and minerals.
According to Moh's scale, what is the hardest mineral?
Diamond
What is the layer of the earth found under the crust?
Mantle
Granite is which type of rock?
Igneous
Nature or human? Rocks can be used to make statues and monuments
Humans
True or False. Subsoil consists of sand, silt and clay.
True
According to moh's scale, what is the softest mineral?
talc
What is the most commonly found rock on the earth's crust?
Igneous
Describe the rock cycle
must describe all three types of rock.
True or False. We can survive without rocks?
False.
What is soil made of?
weathered rock, mineral particles, organic materials, air, water and living organisms.
What is another word for classifying?
sorting
Fossils are found in what type of rock?
Sedimentary