Rocks and the Rock Cycle: What Are Rocks Made of?

The video tutorial explains the differences between rocks and elk, highlighting that elk are living organisms while rocks are non-living substances composed of minerals. It defines minerals as natural, inorganic substances with a definite crystal structure and chemical makeup. The video further explores how some minerals are made of a single element, like sulfur, while others, like quartz and hornblende, consist of multiple elements.

What is the primary distinction between elk and rocks?

• Elk are non-living, rocks are living

• Elk are living organisms, rocks are not

• Both are non-living substances

• Both are living organisms

Which of the following best describes a mineral?

• A living organism with a crystal structure

• A natural, organic substance

• A natural, inorganic substance with a definite crystal structure

• A man-made, inorganic substance

What characteristic is common to all minerals?

• They are always composed of a single element

• They are made from living things

• They are man-made

• They have a definite chemical makeup

Which mineral is composed of a single element?

• Silicon

• Quartz

• Hornblende

• Sulfur

What elements make up quartz?

• Silicon and Sulfur

• Silicon and Oxygen

• Sulfur and Oxygen

• Oxygen and Hydrogen