I WONDER - What Are Igneous Rocks?

Igneous rocks form when magma cools and solidifies, either underground or on the Earth's surface. Underground, large crystals form, while surface cooling results in tiny crystals. These rocks can be glassy or rough, with granite and basalt as examples. Igneous rocks are often used in countertops and statues.

What is the initial form of igneous rocks before they solidify?

• Sand

• Magma

• Sediment

• Clay

Where do large crystals in igneous rocks typically form?

• On the ocean floor

• In the atmosphere

• On mountain tops

• Under the Earth's surface

What happens to magma when it reaches the Earth's surface?

• It forms large crystals

• It becomes sediment

• It turns into lava

• It evaporates

Which of the following is an example of an igneous rock?

• Marble

• Sandstone

• Granite

• Limestone

Where might you commonly find igneous rocks being used?

• In roofing

• In textiles

• In countertops

• In jewelry