Its not a boulder, its a ROCK!
Foster those fossils!
My precious gemstones!
Metals galore!
Riddles
100

Material used in pencils instead of lead

What is graphite?

100

The time most fossils were probably formed?

What is the Flood of Moses's Day

100

Rarest gemstone

What is a ruby?

100

Most useful metal

What is iron?

100

What has hands but cannot write or clap?

What is a clock?

200

Rock often used to make chalkboards

What is slate?


200

Substance which whole animals have been preserved

What is Ice, tar, amber?

200

Hardest of all substances

What is diamond?

200

Only metal that is a liquid at room temperature

What is mercury?

200

Remove my skin and I won't cry, but you might! What am I?

What is an onion?

300

The decaying plant and animal material in the soil?

What is humus?

300

type of rock most fossils are found in

What is sedimentary?

300

A rocklike object containing crystals

What is a geode?

300

Best conductor of electricity

What is silver?

300

If you threw a yellow stone into a blue sea, what would it become?

What is wet?

400

Rock that smells like mud when wet

What is shale?

400

Preserved remains of plants and animals 

What is fossils?

400

The difference between a gem and a gemstone.

Gemstones are rare, beautiful and found first

Gems are cut polished stones.

400

Type of weathering

What is chemical and physical?

400

I roar from the ground, ash thrown high; lava is my blood, and smoke fills the sky. What am I?

What is volcano?

500

Very durable artificial rock

What is concrete?

500

The hardened sap in which some insects have been preserved

What is amber?

500

A solid having a definite shape with flat faces and sharp edges

What is a crystal?

500

Rustproof, light weight, non magnetic metal

What is aluminum?

500

First, think of the color of the clouds. Next, think of the color of snow. Now, think of the color of a bright, full moon. Now, answer quickly: What do cows drink?

What is Water?

600

Molten rock in the earth's mantle 

What is magma?

600

A kind of Fossil

What is petrified, mold, print, whole animal/plant?

600

Gives quartz its color

What is its impurities?

600

Oil in its natural state

What is crude oil or petroleum?
600

I'm part a whole but not the same, I can tell the size or portion you claim. In pizza or pie, I come into play. What am I?

What is a fraction?