Topic 1
What are rocks?
Solidified sediment that had been put down in layers over time.
What is sedimentary rock?
A rock found in an area that nothing like the other rocks in the area. Left by a glacier.
What is an erratic?
Mounds of dirt pushed aside by a glacier.
What is a moraine?
This word, describes the "shininess" of something.
What is lustre?
What are minerals?
The layered appearance of sedimentary rock.
What is stratification?
The breakdown of rock as living things dig in and secrete various substances on the surface of the rock.
What is biological weathering?
The powdered form of a solid often has a different, and distinct colour.
What is streak?
What is compost?
According to this, a nine will scratch a 3.
What is the Mohs scale?
This type of igneous rock forms when lava cools above the surface of the earth.
What is extrusive rock?
Scratches in the surface of rock formed by other rock scraping over them as they are pushed by glaciers.
What are striations?
Formed when lava or magma cools?
What is igneous rock?
What is topsoil?
This term describes the way a rock breaks with jagged edges.
What is fracture?
Created with extreme heat and pressure deep inside the earth.
What is metamorphic rock?
The repeated freezing and thawing of water in the cracks of rocks that eventually fracture the rock.
What is frost wedging?
Reacting with acid, is an example of this mineral characteristic.
What are chemical properties?
The breakdown of rock as it tumbles and breaks apart, or smashes against other rocks.
What is mechanical weathering?
This term describes the way rock breaks with flat surfaces.
What is cleavage?
When minerals or nutrients are dissolved in the soil, and then able to sink down lower and lower, typically out of reach of plant roots.
Small crescent shaped lakes formed over time when a curving river eventually straightens out.
What is a billabong?
The breakdown of rock through reactions with chemicals in the rain or surface water.
What is chemical weathering?
How can a mineral be sediment, then part of a sedimentary rock, then three other types of rock, before becoming sediment again?
What is the rock cycle?