When you rub this type of rock, little rocks come out. What is this rock type?

What type of rock is Limestone?

What rocks form after weathering and erosion?

What rock did you use to make spears at Wagner Ranch?

What rock type has the most crystals?

What type of rock is Marble?

What rocks form under pressure and heat?

What are solar panels made of?

What rock type is made from other rocks pushing it together?

What type of rock is Sandstone?

What are the steps that sedimentary rocks go through before they are rocks?

How long does it take for lava to cool to a thickness thick enough to walk on.

What rock type is formed underground by heat and pressure?

What type of rock is Granite?

What type of rock melts then becomes igneous after it cools?

What rocks have many crystals from fast cooling magma?

What type of rock is Obsidian?

What makes an igneous rock have bigger crystals after it cools?