Types of Rocks
What are the 3 main types of rocks?
Igneous, Sedimentary, Metamorphic
Minerals are naturally found inside what?
Rocks
Which property is tested using a streak plate?
Streak
What are fossils?
Remains of living things from the past
Is it true or false that mining only has positive effects? Explain your answer.
False, can be very harmful to the emvironment
How is igneous rock formed, and what materials does it come from?
Igneous rock forms when magma or lava cools and hardens
What is one physical property used to identify minerals?
Lustre / hardness / streak / colour / magnetism
Which property tells how easily a mineral can be scratched?
Hardness
What can fossils tell us about the Earth?
Earth’s history
Why is mining important to humans?
Provides useful materials
Which type of rock is formed from layers of sand, mud, and small rocks pressed together?
Sedimentary
What does hardness measure in a mineral?
How easily a mineral can be scratched
What are three physical properties of minerals? Describe them
Lustre, hardness, streak (or others)
Why are fossils important for understanding Earth’s history?
They help us understand the past
What is one way minerals are used in everyday life?
Buildings, cans, roads, etc.
Which type of rock is formed when existing rocks are changed by heat and pressure?
Metamorphic
How do scientists test the streak of a mineral?
Rubbing on a streak plate
How can the colour of a mineral help scientists?
Helps identify minerals
What do you call scientists who study fossils?
Paleontologists
What are two environmental impacts of mining, and how do they affect ecosystems?
Marble is what type of rock?
Metamorphic
What are the softest and hardest minerals on the Mohs scale?
Talc (softest), Diamond (hardest)
What does the lustre of a mineral describe?
How shiny it is
What is the study of fossils called?
Paleontology
If mining is necessary but harmful, what are some ways humans can reduce its negative effects?