Exploring Mineral Properties Quiz

What is the term used to describe how light reflects off the surface of a mineral?

• Hardness

• Luster

• Streak

• Breakage

Which of the following best describes the process to test a mineral's streak?

• Observe the mineral under bright light

• Rub the mineral across a streak plate

• Scratch the mineral with a fingernail

• Break the mineral to observe its surfaces

Explain why a mineral with a metallic luster might appear different under various lighting conditions. Use evidence from your observations to support your reasoning.

• The mineral's color changes with light

• The mineral's surface reflects light differently

• The mineral absorbs light completely

• The mineral's hardness affects its appearance

Which of the following describes a mineral that breaks along smooth, flat planes?

• Fracture

• Cleavage

• Streak

• Luster

A student observes a mineral sample and notes that it has a dull appearance. What type of luster does this mineral most likely have?

• Metallic

• Non-metallic

• Cleavage

• Fracture

How would you determine the hardness of a mineral using the Mohs hardness scale?

• By observing the mineral's color

• By rubbing the mineral on a streak plate

• By scratching the mineral with objects of known hardness

• By breaking the mineral to observe its surfaces

A mineral sample leaves a red powder when rubbed on a streak plate. What does this indicate about the mineral?

• The mineral has a red luster

• The mineral has a red streak

• The mineral has a red fracture

• The mineral has a red cleavage

Plan a method to differentiate between two minerals that both have a non-metallic luster but different hardness levels.

• Use a streak plate to compare colors

• Observe the minerals under bright light

• Scratch each mineral with a set of objects of known hardness

• Break the minerals to observe their surfaces

Which property would you examine to determine if a mineral breaks with uneven, jagged surfaces?

• Luster

• Cleavage

• Fracture

• Streak

A mineral sample is tested and found to have a hardness of 7 on the Mohs scale. Which of the following minerals could it potentially scratch?

• Talc (hardness 1)

• Gypsum (hardness 2)

• Quartz (hardness 7)

• Diamond (hardness 10)