Layers
What is the thermosphere.
This is the most abundant gas in the atmosphere.
What is nitrogen.
What objects radiate heat energy?
What is all objects.
What is the process that keeps the Earth warm?
The greenhouse effect
Troposphere
Which layer protects us by absorbing harmful radiation in the ozone layer?
What is the stratosphere.
This is the second most abundant layer in the atmosphere.
What is oxygen.
70% of the sunlight is ________ by gases, particles and the Earth's surface.
absorbed
What is in the atmosphere that absorbs heat energy radiating from the Earth?
In which atmosphere layers does it get WARMER as you rise?
Stratosphere and Thermosphere
Which layer protects us from meteors?
What is the mesophere.
Name one gas found in small amounts in the atmosphere.
Any accepted: CO2, water vapor, or greenhouse gases (methane, nitrous oxide, CFCs)
Radiated heat energy gets ________ by greenhouse gases or transmitted back into space.
absorbed
Methane (CH4)
What happens to density in the atmosphere as you go higher up?
It decreases!
In which layers does the it get COLDER as you rise in altitude?
tropsophere, mesosphere
Which is NOT a property of air:
1) Air has mass
2) Air is visible
2) Air has volume
What is #2; air is visible is NOT a property.
25% of sunlight is ___________by clouds and gases, never reaching Earth's surface.
reflected
Which gas comes from the burning of fossil fuels and stays in the atmosphere for centuries?
Carbon dioxide
What chilly thing do scientists use to look at historical carbon dioxide levels?
Ice cores
What criteria do scientists use to define the layers of the atmosphere?
Temperature
In class, you were able to suspend an index card in the air using water and a small cup. This illustrated which property of air?
Air exerts pressure in all directions.
44% of the energy absorbed by earth is __________ back to the clouds atmosphere.
radiated
Which greenhouse gas enters the atmosphere through evaporation?
Water vapor
These man-made greenhouse gases come from aerosol cans and have made a hole in the ozone layer
What are chlorofluorocarbons (CFCs)?