Mystery Science- Birth of Rocks

This kind of rock forms from lava eruptions.

• slate

• lava rocks

• obsidian

• basalt

Rocks, pebbles, mud, and even boulders come flowing down the side of a mountain. This natural disaster is called a...

• volcanic eruption

• earthquake

• mudslide

• landslide

Could a volcano pop up in Illinois? Why or why not?

• Yes, anything can happen.

• Yes, there are volcanoes nearby and we get a lot of earthquakes.

• No, there is no pattern of volcanoes or earthquakes nearby.

• No, it's just impossible.

When a growing seed slowly breaks rock apart, it's called...

• plant wedging

• root erosion

• ice wedging

• root wedging

The pattern of volcanoes and fault lines around the Pacific Ocean is sometimes called.

• The Ring of Fire

• The Horseshoe of Fire

• The Ring of Volcanoes

• The Pacific Plate

This volcano has a low, mound shape with thin, spread-out lava.

• Mt. St. Helens

• shield volcano

• Hawaiian volcano

• cone volcano

The rocks at the bottom of Mt. Everest (29,029 ft) are much more eroded than the rocks at the bottom of Mt. Mitchell (6,684 ft) in the Appalachians. What is probably the reason for this?

• There is more ice wedging on Mt. Everest.

• Mt. Mitchell has more trees on it.

• The rocks fall a lot farther on Mt. Everest.

• Mt. Everest is windier.

This type of volcano is tall and pointy, with thick lava.

• cone volcano

• shield volcano

• Mt. St. Helens

• pyramid volcano