Scientists use radiometric dating to determine the exact age of rocks. What might scientists hypothesize about the natural structure shown in the image?
(1 point)
Responses
The lightest layers on the structure will be the oldest, while the darkest layers will be the youngest.
The lightest layers on the structure will be the oldest, while the darkest layers will be the youngest.
The lowest layer on the structure will be the oldest, while the highest layer will be the youngest.
The lowest layer on the structure will be the oldest, while the highest layer will be the youngest.
The darkest layers on the structure will be the oldest, while the lightest layers will be the youngest.
The darkest layers on the structure will be the oldest, while the lightest layers will be the youngest.
The highest layer on the structure will be the oldest, while the lowest layer will be the youngest.
31 answers
The lowest layer on the structure will be the oldest, while the highest layer will be the youngest.
Why do convergent boundaries cause the formation of volcanoes? (1 point)
Responses
When two plates move away from each other, they create a crack in the crust, or a fault. This fault can go all the way to the mantle, causing magma to shoot out onto the crust.
When two plates move away from each other, they create a crack in the crust, or a fault. This fault can go all the way to the mantle, causing magma to shoot out onto the crust.
When two plates collide, part of one plate is broken. This creates an area where the mantle is exposed to the air and magma shoots out onto the crust.
When two plates collide, part of one plate is broken. This creates an area where the mantle is exposed to the air and magma shoots out onto the crust.
When two plates move away from each other, the crust gets thinner. This allows magma to shoot out onto the surface of the crust and harden.
When two plates move away from each other, the crust gets thinner. This allows magma to shoot out onto the surface of the crust and harden.
When two plates collide, one goes under the other. This creates an area of high pressure, which causes mantle rock to melt into magma and shoot out onto the crust.
Responses
When two plates move away from each other, they create a crack in the crust, or a fault. This fault can go all the way to the mantle, causing magma to shoot out onto the crust.
When two plates move away from each other, they create a crack in the crust, or a fault. This fault can go all the way to the mantle, causing magma to shoot out onto the crust.
When two plates collide, part of one plate is broken. This creates an area where the mantle is exposed to the air and magma shoots out onto the crust.
When two plates collide, part of one plate is broken. This creates an area where the mantle is exposed to the air and magma shoots out onto the crust.
When two plates move away from each other, the crust gets thinner. This allows magma to shoot out onto the surface of the crust and harden.
When two plates move away from each other, the crust gets thinner. This allows magma to shoot out onto the surface of the crust and harden.
When two plates collide, one goes under the other. This creates an area of high pressure, which causes mantle rock to melt into magma and shoot out onto the crust.
When two plates collide, one goes under the other. This creates an area of high pressure, which causes mantle rock to melt into magma and shoot out onto the crust.
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Acidic water is known to react with the substances in limestone, breaking it down. What is this process called?(1 point)
Responses
volcanism
volcanism
erosion
erosion
weathering
weathering
tectonic uplift
Responses
volcanism
volcanism
erosion
erosion
weathering
weathering
tectonic uplift
weathering
Why do most people in Southeast Asia live near river deltas and on volcanic islands?
A.
because of the abundant rainfall
B.
because of the fertile soil
C.
because of the isolation from invaders
D.
because of the mild climate conditions
A.
because of the abundant rainfall
B.
because of the fertile soil
C.
because of the isolation from invaders
D.
because of the mild climate conditions
B. because of the fertile soil.
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Monoculture, in which farmers raise a single crop in a field every year, can damage the soil. How much of a concern is this? (1 point)
Responses
Not a serious problem anymore, because soil damage can be fixed with recent technologies.
Not a serious problem anymore, because soil damage can be fixed with recent technologies.
A serious one because soil, once damaged, cannot be made fertile again within a human lifetime.
A serious one because soil, once damaged, cannot be made fertile again within a human lifetime.
This is not much of a problem because soil is a renewable resource.
This is not much of a problem because soil is a renewable resource.
A serious one, because damaged soil can harm fossil fuel reserves.
Responses
Not a serious problem anymore, because soil damage can be fixed with recent technologies.
Not a serious problem anymore, because soil damage can be fixed with recent technologies.
A serious one because soil, once damaged, cannot be made fertile again within a human lifetime.
A serious one because soil, once damaged, cannot be made fertile again within a human lifetime.
This is not much of a problem because soil is a renewable resource.
This is not much of a problem because soil is a renewable resource.
A serious one, because damaged soil can harm fossil fuel reserves.
A serious one because soil, once damaged, cannot be made fertile again within a human lifetime.
Drag and drop each ethnic group to match it to the country in which it makes up the largest population group.
Chinese
Javanese
Tagalog
Indonesia
the Philippines
Singapore
Chinese
Javanese
Tagalog
Indonesia
the Philippines
Singapore
Chinese - Singapore
Javanese - Indonesia
Tagalog - the Philippines
Javanese - Indonesia
Tagalog - the Philippines
Which natural resources can lead to a larger population in an area? (1 point)
Responses
Fossil fuels.
Fossil fuels.
Natural resources do not have a consistent relationship with population.
Natural resources do not have a consistent relationship with population.
Water only.
Water only.
Soil, animals that can be domesticated, and water.
Responses
Fossil fuels.
Fossil fuels.
Natural resources do not have a consistent relationship with population.
Natural resources do not have a consistent relationship with population.
Water only.
Water only.
Soil, animals that can be domesticated, and water.
Soil, animals that can be domesticated, and water.
Which is the most likely effect of sea level rising due to climate change?(1 point)
Responses
Populations will face more tsunami dangers.
Populations will face more tsunami dangers.
Populations will experience more severe storms.
Populations will experience more severe storms.
Populations will have to move further inland from the shore.
Populations will have to move further inland from the shore.
Populations will face greater famine.
Populations will face greater famine.
Responses
Populations will face more tsunami dangers.
Populations will face more tsunami dangers.
Populations will experience more severe storms.
Populations will experience more severe storms.
Populations will have to move further inland from the shore.
Populations will have to move further inland from the shore.
Populations will face greater famine.
Populations will face greater famine.
Populations will have to move further inland from the shore.
Why do people no longer live in places like Picher, Oklahoma, or Bhopal, India?(1 point)
Responses
human-made subsidence
human-made subsidence
natural hazard of earthquake activity
natural hazard of earthquake activity
natural hazard of increasing frequency of storms
natural hazard of increasing frequency of storms
human-made contamination
Responses
human-made subsidence
human-made subsidence
natural hazard of earthquake activity
natural hazard of earthquake activity
natural hazard of increasing frequency of storms
natural hazard of increasing frequency of storms
human-made contamination
human-made contamination
Which is true about energy production?(1 point)
Responses
Solar and wind energy have become the cheapest forms of energy production.
Solar and wind energy have become the cheapest forms of energy production.
Global fossil fuel use is declining.
Global fossil fuel use is declining.
Fossil fuels should only be used in moderation to prevent climate change.
Fossil fuels should only be used in moderation to prevent climate change.
Fossil fuels are the cheapest forms of energy production
Responses
Solar and wind energy have become the cheapest forms of energy production.
Solar and wind energy have become the cheapest forms of energy production.
Global fossil fuel use is declining.
Global fossil fuel use is declining.
Fossil fuels should only be used in moderation to prevent climate change.
Fossil fuels should only be used in moderation to prevent climate change.
Fossil fuels are the cheapest forms of energy production
Fossil fuels are the cheapest forms of energy production.
Which is true about wood?(1 point)
Responses
Wood is very sustainable if it comes from sustainable forests.
Wood is very sustainable if it comes from sustainable forests.
Wood is unsustainable because it requires the killing of trees.
Wood is unsustainable because it requires the killing of trees.
While wood is more sustainable than steel or concrete, it is less safe because it is the most vulnerable material to fire.
While wood is more sustainable than steel or concrete, it is less safe because it is the most vulnerable material to fire.
While wood is more sustainable than steel or concrete, it is not as strong as those materials.
Responses
Wood is very sustainable if it comes from sustainable forests.
Wood is very sustainable if it comes from sustainable forests.
Wood is unsustainable because it requires the killing of trees.
Wood is unsustainable because it requires the killing of trees.
While wood is more sustainable than steel or concrete, it is less safe because it is the most vulnerable material to fire.
While wood is more sustainable than steel or concrete, it is less safe because it is the most vulnerable material to fire.
While wood is more sustainable than steel or concrete, it is not as strong as those materials.
Wood is very sustainable if it comes from sustainable forests.
Which of these is the best solution for an electronic product to be environmentally friendly? (1 point)
Responses
Choose recycled metals.
Choose recycled metals.
Choose materials other than metals.
Choose materials other than metals.
Choose metals that come from only American mines.
Choose metals that come from only American mines.
Choose metals that come from mines that use renewable energy.
Responses
Choose recycled metals.
Choose recycled metals.
Choose materials other than metals.
Choose materials other than metals.
Choose metals that come from only American mines.
Choose metals that come from only American mines.
Choose metals that come from mines that use renewable energy.
Choose recycled metals.
Which of these policies can cause electronic products to be designed using more recyclable materials?(1 point)
Responses
not requiring consumers to sort their recycling
not requiring consumers to sort their recycling
no such policy, because electronic items are necessarily made of unrecyclable materials.
no such policy, because electronic items are necessarily made of unrecyclable materials.
requiring companies to pay for disposal of their products
requiring companies to pay for disposal of their products
charging people for trashing items rather than recycling them
Responses
not requiring consumers to sort their recycling
not requiring consumers to sort their recycling
no such policy, because electronic items are necessarily made of unrecyclable materials.
no such policy, because electronic items are necessarily made of unrecyclable materials.
requiring companies to pay for disposal of their products
requiring companies to pay for disposal of their products
charging people for trashing items rather than recycling them
requiring companies to pay for disposal of their products
how the evolution of photosynthetic organisms led to a drastic change in Earth’s atmosphere and oceans. What evidence do we have that this event took place? How did it affect the biosphere?
Photosynthetic organisms, such as cyanobacteria, were some of the earliest forms of life on Earth and evolved the ability to produce oxygen as a byproduct of photosynthesis. This process resulted in a dramatic increase of oxygen on Earth, creating the current atmospheric composition that we know today. The evolution of oxygen-producing photosynthesis by cyanobacteria and other organisms led to the Great Oxygenation Event (GOE) approximately 2.4 billion years ago, marking a major transition in Earth's biosphere.
The chemical composition of Earth's oldest rocks (Archean rocks) provide evidence for this event, as some contain banded iron formations that could only have formed in the presence of oxygen. Fossil records of cyanobacteria also provide evidence of this critical transition.
The evolution of photosynthetic organisms and the subsequent increase of oxygen in the atmosphere and the oceans greatly impacted the biosphere. The GOE paved the way for the evolution of more complex, aerobic organisms that rely on oxygen for respiration. It also allowed for the development of the ozone layer, which protects the Earth's organisms from harmful levels of UV radiation. This event is considered one of the most important in the history of life on Earth and has shaped the subsequent history of the Earth's biosphere.
The chemical composition of Earth's oldest rocks (Archean rocks) provide evidence for this event, as some contain banded iron formations that could only have formed in the presence of oxygen. Fossil records of cyanobacteria also provide evidence of this critical transition.
The evolution of photosynthetic organisms and the subsequent increase of oxygen in the atmosphere and the oceans greatly impacted the biosphere. The GOE paved the way for the evolution of more complex, aerobic organisms that rely on oxygen for respiration. It also allowed for the development of the ozone layer, which protects the Earth's organisms from harmful levels of UV radiation. This event is considered one of the most important in the history of life on Earth and has shaped the subsequent history of the Earth's biosphere.
7 answers