Climates cool when particles block sun.
Climates change as continents move.
Ice Ages
El Nino
Impact of Global Warming.
100
what are tiny solid and liquid particles mixed in with air?
What is particulates
100
Earth’s continents were-
What is at one point in time- joined together in a gigantic landmass called Pangaea.
100
How many major periods of global cooling have there been in the last 100 million years?
What is seven major periods. The most recent was 2 million years ago & is still going on today.
100
What is El Nino?
What is a disturbance of wind patterns and ocean currents in the Pacific Ocean.
100
As temperatures warm, sea levels will ____?
What is expand.
200
True/ False Particulates block some of the Sun’s energy, preventing it from reaching the Earth’s surface.
What is true
200
Pangaea began to break up about ___ million years ago.
What is 200
200
What are periods in which huge sheets of ice spread out beyond the polar regions?
What is Ice Ages.
200
How often does El Nino occur?
What is every 3 to 7 years & lasts for 12 to 18 months.
200
Global warming will endanger many plant and animal species by doing what?
What is altering natural habitats.
300
natural events suddenly release large amounts of what
What is particulates.
300
climates gradually changed in different ways. WHEN?
What is As the continents moved
300
Ice ages are separated by ____?
What is warmer periods in which ice sheets shrink back towards the poles.
300
What temporary effects does El Nino cause?
What is temporary climate changes in many parts of the world.
300
If Earth warms more than a few degrees Celsius, most of the world's agriculture will be _____?
What is harmed. Change in temperature and precipitation can affect crops and livestock.
400
what could cause temporary change in climates around the world.
What is natural events suddenly release large amounts of particulates.
400
Some continents _______ as they moved toward higher latitudes. Others grew ______ as they moved towards the equator. (Fill in the blanks.)
What is cooler and warmer
400
Only _____ & _____ have large ice sheets today.
What is Greenland & Antarctica.
400
The rising warm air _____ into clouds and releases heavy rain.
What is condenses.
400
What could warmer temperatures do to affect health problems with humans?
What is could increase heat-related deaths and deaths from some diseases (malaria), especially in areas near the equator.
500
By releasing _______ dioxide gas, volcanoes affect global climate.
What is sulfur
500
When they drifted apart,The movement of continents had some other effects on the continents changed paths of ocean currents that help warm coastal regions. When the landmasses collided with other masses, they pushed up mountain ranges. Mountains influence temperature and precipitation patterns by changing ____ paths. (Fill in the blank)
What is wind paths
500
How do scientists study to know ice ages have occured?
What is by studying polar ice and the ocean floor to estimate past changes in temperature.
500
Weak trade winds allow warm water to do what?
What is flow back to the central and eastern Pacific.
500
True or False: Some scientists predict that no changes will happen in temperature by 2100.
What is False. Scientists predict more dangerous changes beyond 2100 if humans continue to add greenhouse gases to the atmosphere at current levels.
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