Science Ch 4 The Earth

The rarest gemstone is:

A person who explores caves is a?

The most useful substance is:

What type of rock is Marble:

What type of rock is Limestone:

Another type of weathering is called:

A radioactive metal used as a source for nuclear power is:

What type of rock is Obsidian:

What type of rock is Shale:

All minerals form a special kind of solid called a crystal.

A rocklike object that looks like a mudball is called a:

What is molten rock in the earth's mantle called?

Oil in its natural state is called:

Fossils that form when mud buries a plant or animal and then quickly hardens around it are called:

All minerals form a special kind of solid called a gemstone.

Rare, beautiful minerals that are very hard but have not yet been polished are:

The hardest substance is:

Which material is a very durable artificial rock?

A scientist that studies the structure of the earth is a:

Most fossils were probably formed:

What is the best conductor of electricity?

What type of rock is Pumice:

What type of rock is Slate:

Which rock has often been used to make chalkboards?

What type of rock is Sandstone:

A person that studies minerals is a:

What metal is liquid at room temperature:

What do we call the decaying plant and animal material in the soil?

Which rock smells like mud when it is wet?

Aluminum is lightweight, nonmagnetic, rustproof metal.

An underground spring that shoots streams of boiling water and steam up into the air from time to time is a:

Scientists who study fossils are called:

One type of weathering is called:

What type of rock is Granite:

Plant and animal remains that have turned to stone are called:

What material is used in pencils instead of lead?