1. The center of Earth.
2. Small chunks of minerals and rock pieces.
3. Opening in the earth's crust.
4. Formed when bits rock and sediment build up over time.
5. Building blocks of rocks.
6. Rocks changed by heat and/or pressure.
7. Hot liquid rock below the earth's surface.
8. The outer layer of earth.
9. Core of a mineral with a smooth side.
10. Rocks that are formed when magma cools and hardens.
11. Magma that has erupted on the earth’s surface.
12. Fossils in rocks, imprints of animal or plant from long ago.
A. Magma
B. Sedimentary rocks
C. Igneous rocks
D. Metamorphic rocks
E. Crust
F. Mantle
G. Mineral
H. Lava
I. Volcano
J. Sand
1. F
2. J
3. I
4. B
5. G
6. D
7. A
8. E
9. C
10. C
11. H
12. B
Parent Tip: Review the logic above to help your child master the concept of rocks and minerals 4th grade worksheet.