Investigating Volcanoes & Igneous Rocks
4th Grade Science – Geological Features of the Earth
In our Internet search, we will be visiting sites that focus on volcanoes and igneous rocks.
Click on each of the links below and read to find the answers to the questions listed after
the site link.
Meltdown!
This site classifies information about volcanoes.
1.What are the three types of volcanic material? Classify them by state of matter.
2.What do scientists use to predict volcanic activity?
3.How are volcanoes classified?
Melting Rocks
This site has a video on lava activity.
1.Explain the difference between magma and lava.
2.Watch the Viscosity video clip. Name the types of lava and give a brief description of
each.
Fire Rocks!
This site explains and demonstrates the formation of igneous rocks as well as sedimentary
and metamorphic rocks.
1.Of the four rocks, which are formed by a volcanic eruption?
2.Visit the other rock types and then take the expert quiz.
Igneous Rock Slide Show
This site has beautiful photographs of rock specimens.
1.Find the rock that is used for a scalpel in specific eye operations.
2.Find the rock that floats on water.
3.Find the most common or widespread igneous rock.
4.Find volcanic glass.