4th Grade Social Science Unit 4

These rocks form when molten lava from volcanoes cools and hardens

• igneous rocks

• ingenious rocks

• metamorphic rocks

If lava cools __________, large crystals form and the igneous rock looks the same colour all over.

• quickly

• slowly

These rocks consist of layers of other rock fragments, or animal or plant fossils, that compact for millions of years

• igneous rocks

• sedimentary rocks

• metamorphic rocks

These rocks are formed from extreme heat and pressure in the surrounding earth

• igneous rocks

• metamorphic rocks

• sedimentary rocks

The outer layer of the earth (blue and green) is called the

• crust

• mantle

• sky

The middle layer of the earth (red) is called the

• atmosphere

• core

• mantle

The inner layer of the earth (yellow) is called the

• mantle

• core

• lava

Two examples of igneous rocks are

• marble and slate

• clay and limestone

• granite and basalt

Two examples of sedimentary rocks are

• granite and basalt

• clay and limestone

• marble and slate

Two examples of metamorphic rocks are

• clay and limestone

• marble and slate

• granite and basalt