What is the main idea of the lesson?

• Rocks are formed from solid material made up of one or more minerals.

• Earth's crust is made of minerals with different properties.

• The rock cycle is a continuous process of rock formation.

• Minerals are compounds made up of two or more elements.

Tags

NGSS.MS-ESS2-1

What is the definition of mineral?

• A substance that cannot be changed into a simpler substance

• A structure arranged in orderly, fixed patterns

• A type of sedimentary rock

• A naturally occurring solid material of Earth's crust

What is the crystal structure of a mineral?

• The measure of how well a mineral resists scratching

• The way the mineral breaks

• The structure arranged in orderly, fixed patterns

• The way the mineral reflects light

What is the streak of a mineral?

• The way the mineral reflects light

• The structure arranged in orderly, fixed patterns

• The measure of how well a mineral resists scratching

• The color left when the mineral is scratched on a surface

What is luster in minerals?

• The structure arranged in orderly, fixed patterns

• The way the mineral reflects light

• The color left when the mineral is scratched on a surface

• The measure of how well a mineral resists scratching

What is the scale of hardness devised by Friedrich Mohs?

• The scale's lowest number is 5 and the highest number is 15

• The scale's lowest number is 1 and the highest number is 10

• The scale's lowest number is 15 and the highest number is 5

• The scale's lowest number is 10 and the highest number is 1

What is the process in which rocks continuously change from one kind into another over long periods of time?

• Weathering

• Erosion

• Deposition

• The rock cycle

Tags

NGSS.MS-ESS2-1

How does an igneous rock that has cooled quickly differ from one that has cooled slowly?

• It has a rougher, more coarse texture

• It has a smoother, finer texture

• It has a glassy luster

• It has a metallic luster

Tags

NGSS.MS-PS1-4

How do the characteristics of sedimentary rock differ from those of metamorphic rock?

• Metamorphic rocks are formed from solid material made up of one or more minerals

• Metamorphic rocks are formed when small pieces of rocks, minerals, and shells are deposited, buried, and squeezed and cemented together

• Sedimentary rocks are formed when loose pieces of rocks and minerals are squeezed and cemented together

• Sedimentary rocks are formed from other rocks when great heat and pressure change the original structure

How do igneous rocks differ from metamorphic rocks?

• Metamorphic rock is formed when small pieces of rocks, minerals, and shells are deposited, buried, and squeezed and cemented together

• Igneous rock is formed from solid material made up of one or more minerals

• Metamorphic rock forms from other rocks which have changed from heat, pressure, or a chemical reaction

• Igneous rock forms when melted rock in the form of lava or magma cools and turns into a solid