Global Climate Change Phenomenon

What are the main indicators of climate change?

• Rising sea-surface temperature

• Decreasing air temperature over land

• Decreasing sea level

• Decreasing air temperature over oceans

What is the variation in the Earth's position relative to the Sun known as?

• Axial tilt

• Precession

• Obliquity

• Eccentricity

What are sunspots?

• Bright spots on the Sun

• Dark spots on the Moon

• Magnetic storms on the Sun's surface

• Planets orbiting the Sun

What is the main greenhouse gas responsible for trapping heat in the Earth's atmosphere?

• Nitrogen

• Argon

• Carbon dioxide

• Oxygen

What is the long-term heating of the Earth's climate system known as?

• Global cooling

• Climate fluctuation

• Global warming

• Seasonal change

What can an increase in greenhouse gases cause?

• Decrease in global temperature

• Increase in global temperature

• No impact on temperature

• Increase in precipitation

What are some consequences of global warming?

• Stronger and more violent storms

• Decrease in sea levels

• Decrease in ocean acidity

• Increase in fresh water availability

What are ways to reduce greenhouse gases?

• Waste electricity

• Plant a tree

• Fly more

• Drive more

What is El Niño?

• A neutral phase of ocean currents

• A warming phase of sea temperature

• An irregular variation in winds and sea surface temperatures

• A cooling phase of sea temperature

What is the neutral phase in El Niño-Southern Oscillation (ENSO)?

• Warmer than usual sea surface temperatures in the region north of Australia

• Trade winds blow east to west

• Cool waters from the deep ocean are drawn to the surface

• Greater convection over the western Pacific