1.7. Rocks

Which type of rock is formed by the compaction and cementation of small fragments?

• Marble

• Basalt

• Granite

• Sandstone

What type of rock is formed when materials dissolved in water later fall to Earth as precipitation?

• Pumice

• Granite

• Gypsum

• Basalt

What is responsible for much of the precipitation of calcium carbonate, forming the most common sedimentary rock?

• Meteorite impacts

• Tectonic plate movements

• Volcanic eruptions

• Phytoplankton and molluscs

What is the preserved remains of an organism from the past, or the remains of an organism's activities?

• Meteorite

• Rock

• Mineral

• Fossil

Where do we find most fossils?

• In sedimentary rocks

• In metamorphic rocks

• In igneous rocks

• In volcanic rocks

What do we know about Earth's history because of fossils?

• The composition of the Earth's core

• The age of the Earth

• The living things that inhabited the land

• The location of meteorite impacts

What do we use to investigate the interior of the Earth?

• Telescopes

• Thermometer

• Microscopes

• Seismic waves

What is the most abundant material in the continental crust?

• Pumice

• Marble

• Granite

• Basalt

What is the layer that extends from the crust to a depth of 2900 kilometers?

• Mantle

• Core

• Crust

• Lithosphere

What is the metallic rock that rotates in the outer core and creates a magnetic field?

• Siderite

• Chondrite

• Granite

• Basalt