Causes of Climate Change

Natural Causes of Climate Change

By Lim Angie

Multiple Choice

Variations in solar output:

When the number of sunspots increases, the amount of solar radiation reaching Earth will _____, thus _____ will happen.

• increase...global warming

• increase...global cooling

• decrease...global cooling

• decrease...global warming

Multiple Choice

Volcanic eruptions:

Volcanic eruptions can cause ________ as _________

• global cooling;

  ash clouds and sulphur-based particles reflect incoming solar radiation back to space.

• global warming;

  extremely hot lava and superheated gases in pyroclastic flows heat up the atmosphere.

Multiple Choice

Global cooling caused by volcanic eruptions is a long-term impact.

• True

• False

Multiple Choice

Which is a natural source of greenhouse gases that cause climate change?

• burning fossil fuels

• deforestation

• volcanic eruptions

Multiple Choice

True or false: Sunspots can be bigger than the Earth

• True

• False

Man-made Causes of Climate Change

By Lim Angie

Multiple Choice

 What is the greenhouse effect?

• The warming of a planet due to trapped radiation.
• The cooling of Earth due to air pollution.
• The heating of a solid, such as a rock.

Multiple Choice

T/F: Some greenhouse gases are naturally present in the Earth's atmosphere

• True
• False

Multiple Choice

The natural greenhouse effect is beneficial.

• True

• False

Multiple Select

Which of these are greenhouse gases? You may select more than one option.

• Carbon dioxide

• Carbon monoxide

• Methane

• Nitrous oxide

• Oxygen

Multiple Choice

The enhanced greenhouse effect happens when...

• the concentration of greenhouse gases in the atmosphere increases.

• the concentration of greenhouse gases in the atmosphere decreases.

• the concentration of greenhouse gases in the atmosphere stays constant.

• the concentration of greenhouse gases in the atmosphere fluctuates.

Multiple Choice

The enhanced greenhouse effect leads to ___.

• global cooling

• global warming

• global dimming

Multiple Choice

Which of the following is the main cause of the enhanced greenhouse effect?

• Increase in sunspots

• Volcanic eruptions

• Human activities that emit greenhouse gases

Multiple Choice

What do anthropogenic factors refer to?

• Factors caused by human activities

• Factors caused by nature

• Factors caused by scientific processes

• Factors caused by solar activity

Multiple Choice

97% of scientists believe what is causing climate change?

• Animals and Plants

• Eco-Friendly Cars

• Humans

• Conservation of energy

Multiple Select

Which of these are anthropogenic factors that cause the enhanced greenhouse effect? You may select more than one option.

• Burning of fossil fuels

• Deforestation

• Reforestation

• Urbanisation

• Industrialisation

Multiple Select

How does deforestation cause the enhanced greenhouse effect? You may select more than one option.

• Fewer plants to absorb carbon dioxide from the atmosphere.

• Soil gets exposed to sunlight which will increase soil temperature. Thun carbon oxidation in soil will release carbon dioxide into the atmosphere.

• Fewer plants to give out oxygen to cool the atmosphere.

• Fewer plants to give out water vapour that will form clouds in the atmosphere to reflect incoming solar radiation.

Multiple Choice

The burning of fossil fuels to provide energy for human activities is the _____ contributor of greenhouse gases because _____.

• highest...they have very high carbon content, so they release huge amounts of carbon dioxide when burnt.

• highest...they produce high amounts of heat and smoke that will warm the atmosphere when burnt.

• lowest...they release carbon dioxide into the atmosphere very slowly when burnt.

• lowest...most countries around the world do not use fossil fuels for human activities anymore.

Multiple Select

Which of the following involved the burning of fossil fuels?

• Agriculture

• Industries

• Urbanisation

• Reforestation

Multiple Select

What does 'Changing Land Use' means?

• As population increases, the demand for agricultural and industrial land also increases, leading to the removal of forests for more land

• As more people choose to live in cities, land is converted to urban and built-up areas

• Deforestion

• Rural-urban migration

Multiple Select

How does agriculture cause the enhanced greenhouse effect? You may select more than one option.

• Farm machinery run on fossil fuels which release carbon dioxide.

• Methane is released from decomposing matter in wet rice fields.

• Growing demand for beef products around the world leads to more intense cattle farming. More methane is released by cattle such as cows.

• More nitrous oxide is released from soil as inorganic fertilizers are used to boost the growth of crops.

Multiple Select

How do industries cause the enhanced greenhouse effect? You may select more than one option.

• Production of goods and services need machines which in turn run on fossil fuels.

• Deforestation takes place to clear land for more factories and infrastructure to be built for industries.

• More vehicles are used to transport goods and services to meet the needs of consumers.

• Advanced technology is being used by some industries to reduce carbon dioxide emissions.

Multiple Choice

Largest CO² emissions come from industrial processes in Europe, North and Central America now.

• True

• False

Multiple Choice

China is now the top carbon emitter in the world due to rapid industrialisation.

• True

• False

Multiple Select

Which of these explain how urbanisation causes the enhanced greenhouse effect? You may select more than one option.

• More people live in urban areas such as cities and towns. Hence, more forested areas are cleared to develop cities.

• High concentration of cars, buses and other forms of transportation in urban areas

• Constructing infrastructure and producing construction materials to build cities also release greenhouse gases

• Fewer people live in rural areas such as villages and agricultural areas in the outskirts of a country (a.k.a. countryside).

• Large amounts of fossil fuels are burnt to provide energy for household activities (heating, cooling, cooking, lighting)