RT (3) Key Concepts

Question 1

1.5

Different rocks

Answer 1

1. Rocks can form in different ways. This causes them to be different types.
2. When sediment is compacted and cemented together, it forms sedimentary rock.
3. When magma cools, it hardens to form igneous rock.

Question 2

2.4

Material to create types of rocks

Answer 2

1. Matter gets transformed by energy, but the same matter is still present.
2. Sediment forms when any type of rock is weathered, a process driven by energy from the sun.
3. Magma forms when any type of rock is melted, a process driven by energy from Earth’s interior.

Question 3

3.3

Movement of rocks

Answer 3

1. Plate motion moves rock formations.
2. Subduction moves rock down, below Earth’s outer layer.
3. Uplift moves rock upward toward Earth’s surface.

Question 4

3.4

Rock transformation processes

Answer 4

1. Uplift and subduction can expose rock formations to different energy sources, which can transform them.
2. Any type of rock can transform into any type of rock because of plate motion