Don't Rock the Boat
What are the 3 types of weathering we talked about?
Chemical, biological and mechanical weathering.
Metamorphic rocks form under intense ______ and ______________.
Heat and pressure.
What is an earthquake?
It is the shaking of Earth caused by a sudden breaking of large blocks of rock in Earth’s crust.
Describe a diverging boundary.
It is when plates are moving apart.
A mineral is a _______ substance that forms naturally as a solid in Earth.
Pure
__________ rocks form when hot molten rock cools.
Igneous.
This boundary is when plates come together.
Converging Boundary.
What is the boundary called when plates slide along each other?
A transform boundary.
This device measures and records the motion of an earthquake.
Seismograph
Compare the epicentre to the focus of an earthquake.
Epicentre - the point on Earth's surface directly above the focus of an earthquake.
Focus - the first place that the rocks break below the surface of an earthquake.
The term to describe the movement of rock materials and soil by water, wind or ice.
Erosion
Land usage depends on the soil and its _________.
Fertility.
A Richter scale measures the _____________.
Magnitude
One soil characteristic is texture. Describe what texture means in this context.
It is how smooth or sharp the grains of soil are and how big they are.
What soil characteristic is the basic materials that living things need to survive? Plants can only absorb them if they are dissolved in water.
Nutrient content.
A theory that explains that the ocean floor is moving away from the ocean ridges and toward deep trenches.
Think back to when we discussed soil conservation. List 4 tips we included in our concept map.
Describe streak and lustre.
Streak – the colour of its powder.
Lustre – how mineral reflects light
Compare mechanical weathering to chemical weathering.
Mechanical Weathering – rock is broken apart by physical forces, such as water or wind
Chemical Weathering – wearing down of rocks by the combined action of water and chemical substances in the air
In the rock cycle, what is the step in-between liquid magma and igneous rock?
Cooling.