Five Facts - Rocks

The video presents five fascinating facts about rocks. It begins with the Stone Age, highlighting how early humans used rocks for tools and daily activities. It then explains how magma from volcanoes forms new land, such as the Hawaiian Islands. The video also discusses pumice stones, which are light enough to float on water. Shooting stars, or meteors, are described as space rocks that sometimes land on Earth. Finally, the video covers diamonds, the hardest known material, and their various uses beyond jewelry.

During the Stone Age, what were some of the primary uses of rocks by early humans?

• Navigating the seas

• Building skyscrapers

• Writing on paper

• Creating tools and hunting

What is the primary component of magma that erupts from volcanoes?

• Liquid metal

• Liquid gas

• Liquid rock

• Liquid water

Which type of rock is known for its ability to float on water?

• Marble

• Pumice

• Basalt

• Granite

What are shooting stars actually made of?

• Glowing water droplets

• Pieces of rock or dust

• Burning gas

• Falling stars

On the Mohs Scale of Hardness, what is the rating of diamonds?

• 7 out of 10

• 10 out of 10

• 9 out of 10

• 5 out of 10