Unit 4 Learning Cycle 1 Review

Unit 4 Learning Cycle 1 Review

Copper Deposits

• Copper is usually found along plate boundaries. Minerals like copper are stored in the Earth and the movement of tectonic plates creates deposits of the minerals.

Copper Deposits

• Porphyry copper is found near volcanoes. Copper was stored deep in the Earth's crust and the volcanic eruption brings it to the surface. Weathering separates the copper out to form deposits.

• Sedimentary copper is found in sedimentary rocks. As the rock layers formed the heat and pressure from the formation transform minerals into copper which is stored in the rocks.

Copper Deposits

• Copper mining can have a negative impact on the environment. Air and water pollution from processing the copper, destruction of land resulting in increased erosion from the physical mining, and deforestation that happens when miners need to clear land to access the copper deposits.

Multiple Choice

Which of the following statements is true about copper deposits?

• Copper deposits can most often be found in areas with extremely warm climates.

• Copper deposits can only be found in the Northern Hemisphere.

• Copper deposits can most often be found in areas with active plate boundaries.

• Copper deposits can only be found in areas that border the ocean.

Multiple Select

Choose the 2 statements that are true about the formation of copper ore deposits.

• Porphyry copper ore deposits are commonly found in the center of tectonic plates, away from the plate boundaries.

• Sediment-hosted copper is mainly found in the Pacific Ocean, to the west of the United States.

• Copper ore deposits can be found in sedimentary rocks due to heat and pressure changing the mineral and weathering and erosion exposing the mineral deposit.

• Porphyry copper ore deposits can be found near plate boundaries due to volcanic activity.

Multiple Choice

True or False: mining for copper can have negative impacts on the Earth, such as creating pollution, destroying the land, and cutting down trees to access the copper deposits.

• True

• False

Gold Deposits

• Moving water transports large amounts of materials, including minerals like gold. Gold is removed from rocks by weathering and transported by water in streams.

• As the water slows down at different points in the stream, the gold is separated out. Eventually this gold settles on the bottom of the stream, creating mineral deposits.

• Crevices at the bottom of the stream catch the gold deposits, creating pockets where gold can be collected. In the spring and early summer the water levels are low and it is easier to find and collect through panning.

Multiple Choice

Which of the following statements best explains the geoscience process that affects where gold deposits are deposited?

• Gold is sorted and deposited in streams along with weathered rock debris.

• Bedrock crevices act as natural collection spots.

• Spring, early summer, and just before freeze-up in the fall are good times of the year for panning.

Natural Resources

• Renewable resources are ones that can be replenished in a short amount of time.

• Nonrenewable resources are ones that are found in limited supply OR that cannot be replenished in a short amount of time.

Multiple Choice

Which of the following would be considered an example of a renewable resource?

• Copper

• Petroleum

• Aluminum

• Coal

• Wood

Fossil Fuels

The three kinds of fossil fuels are natural gas, coal and oil (or petroleum). We use fossil fuels for heat and electricity by burning them. Fossil fuels are made from the decayed remains of plants and animals from millions of years ago.  These fossil fuels can cause pollution and are non-renewable resources.​

Multiple Choice

Considering the origins and processes involved in how natural gas, petroleum, and coal formed, which of the following is the best explanation regarding why these resources are referred to as fossil fuels?

• Natural gas, petroleum, and coal were formed when organic matter that has been buried deep in the Earth was subjected to heat and pressure over millions of years.

• Natural gas, petroleum, and coal were only formed during the Jurassic period when dinosaurs walked the Earth.

• Natural gas, petroleum, and coal were formed when elements came together to form planet Earth billions of years ago.

• Natural gas, petroleum, and coal were formed by breaking open rocks that contain fossils from millions of years ago.

Volcanoes

• Volcanoes are formed at plate boundaries.

• Minerals are formed deep beneath the Earth's crust. When the tectonic plates move, these minerals can be moved around and deposited in different areas.

• Heat and pressure sometimes causes magma to be pushed to the surface, resulting in a volcanic eruption.

• This eruption sends the minerals in the magma to the Earth's surface. This magma hardens into lava, and weathering and erosion break the law down, releasing the minerals into the soil.

• These minerals in the soil provide nutrients to plants that are grown there, making the soil more fertile for growing.

Multiple Choice

True or False: the soil around volcanoes is nutrient rich and fertile thanks to geologic processes.

• True

• False

Human Population & Oil Consumption

• Blue line represents the human population

• Red line represents oil produced each day

Multiple Choice

From 1900 to 2000 the human population __________.

• Increased

• Decreased

• Stayed the same

Multiple Choice

From 1900 to 2000 the amount of oil produced __________.

• Increased

• Descreased

• Stayed the same

Multiple Choice

Consider human population growth and oil consumption since 1900. What pattern is supported by the data in the graph?

• As the human population increases, the consumption of oil increases.

• As the human population increases, consumption of oil is not affected.

• Humans are using less oil than in 1900.

• uman oil consumption increased in the 1900s but then remained constant during the 2000s.

Water Resources

• Large populations and agricultural practices have depleted groundwater resources, making these areas prone to forest fires.

• This has created drought conditions that increase the spread of diseases to different animals.

• Mining for resources and production activities create pollution in both air and water.

• If the human population continues to grow we will use up more of our water resources while also continuing production that is damaging to the water we do have available.

Multiple Choice

True or False: the growing human population has had a negative impact on our water resources.

• True

• False

Multiple Choice

True or False: if the human population continues to grow, we could cause further damage to our water resources which could result in a shortage of available water.

• True

• False