Exit Ticket - Mining and Mineral Exploration

What is the first step in finding an ore deposit?

• Analyzing the soil composition

• Refining the ore grade

• Extracting the ore

• Exploring rock for mineralization

Which mining method is used to mine ore deposits that are 50 m or more beneath Earth’s surface?

• Open-pit mining

• Longwall mining

• Room-and-pillar mining

• Dredging

Answer explanation

Room-and-pillar mining is the method used to mine ore deposits that are 50 m or more beneath Earth’s surface. It involves creating a network of rooms and leaving pillars of ore to support the roof. This method is suitable for shallow deposits and provides efficient extraction.

What is the machine called that moves back and forth along the face of a coal seam in longwall mining?

• Loader

• Dredge

• Shearer

• Conveyor

Answer explanation

The machine that moves back and forth along the face of a coal seam in longwall mining is called a shearer. It is responsible for cutting and extracting the coal. The shearer is an essential component in the mining process.

Which mining method is used to mine for deposits of soluble mineral ores such as potash, salt, and sulfur?

• Longwall mining

• Solution mining

• Undersea mining

• Placer mining

Answer explanation

Solution mining is the method used to mine for soluble mineral ores such as potash, salt, and sulfur. It involves extracting the minerals by dissolving them in a solvent, making it an efficient and effective mining technique.

When are surface mining methods used?

• When ore deposits are located deep underground

• When ore deposits are located in rivers

• When ore deposits are located in the ocean

• When ore deposits are located close to Earth’s surface

Answer explanation

Surface mining methods are used when ore deposits are located close to Earth's surface.

What is the principal commodity produced by quarrying?

• Coal

• Gold

• Aggregates

• Talc

Answer explanation

The principal commodity produced by quarrying is aggregates.

Where is the solar evaporation process used for salt production?

• In areas with high rainfall

• In areas with high evaporation rates

• In areas with low evaporation rates

• In areas with low sunlight

Answer explanation

The solar evaporation process for salt production is used in areas with high evaporation rates.

What are placer deposits?

• Deposits that contain valuable minerals that have been concentrated by pressure

• Deposits that contain valuable minerals that have been concentrated by mechanical action

• Deposits that contain valuable minerals that have been concentrated by chemical action

• Deposits that contain valuable minerals that have been concentrated by heat

Answer explanation

Placer deposits are valuable minerals concentrated by mechanical action.

What is the process of melting or fusing of ore in order to separate impurities from pure metal called?

• Solution mining

• Smelting

• Dredging

• Quarrying

Answer explanation

Smelting is the process of melting ore to separate impurities from pure metal.

Tags

NGSS.MS-PS3-3

What significant mineral resources are found on the ocean floor?

• Sand and gravel

• Coal and gold

• Iron and copper

• Diamonds and precious metals

Answer explanation

The significant mineral resources found on the ocean floor include diamonds and precious metals.

Tags

NGSS.MS-ESS3-1