การเปลี่ยนแปลงสภาพภูมิอากาศโลก

Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen?

• Long wave energy from the sun reaches the earth's surface and is converted to short wave energy that is trapped by CO2

• Short wave energy from the sun reaches the earth's surface and is converted to long wave energy that is trapped CO2.

• Infared light reaches Earth’s surface while visible light is trapped as heat.

• Visible light reaches Earth’s surface while infrared light is trapped as heat.

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere
• lower levels of nitrogen in the atmosphere
• higher levels of carbon dioxide in the atmosphere
• higher levels of oxygen in the atmosphere

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960

Which of the following gases IS NOT considered a greenhouse gas?

• carbon dioxide

• nitrogen

• water vapor

• methane

Compared to other greenhouse gases, carbon dioxide is very effective in trapping heat near the surface of the Earth.

• true
• false

Which of the following have been linked to climate change? Pick only those that apply.

• droughts

• flooding

• melting of polar ice caps

• ocean acidification

• all of the above

Which is a primary energy source used by power plants to generate electricity?

• coal

• wood

• petroleum/gasoline

• batteries

• natural gas

Changes in temperature are expected to be greatest

• near the equator
• near the poles
• between the equator and the North Pole
• between the equator and the South Pole

The main human activity that releases greenhouse gases is

• buying bottled water

• burning fossil fuels

• current agricultural practices

• eating red meat

Some greenhouse gases are naturally present in the Earth's atmosphere

• True
• False