Matter Cycles
Evaporation is part of which matter cycle?
Water Cycle
What is the original source of energy for the earth?
Sun
More greenhouse gases in the atmosphere is a result of the ________ greenhouse effect
Enhanced
________ is a fundamental force that exhibits on objects with mass and drives motion on a universal scale
Gravity
The _____________ refers to all matter, energy and space
Universe
Denitrification converts Nitrates and Nitrites into what?
Nitrogen gas
What is the most common greenhouse gas driven by human activities
Carbon Dioxide
Which country had the highest total CO2 emissions
China
Stars begin their lives in stellar nurseries known as _____________
Nebulae
This is the closest galaxy to the milky way
Andromeda
This process allows plants to convert CO2 and water into glucose and O2
Name a piece of evidence for climate change
This greenhouse gas can trap more than 20 times the heat energy of CO2
Methane
After a supernova, a star can either form a neutron star or a __________________
Black hole
The __________ __________ theory claims that the universe is always expanding but is maintaining a constant density
Steady State
In terms of the carbon cycle, large forests can be considered as ______________
Carbon sinks
The global conveyor belt distributing heat around the planet is also known as ___________________ circulation
Thermohaline
This weather pattern is characterized by warmer than average sea surface temperatures
El Nino
___________ ______________ describes the brightness of a star viewed from earth
Apparent Magnitude
The best technique to measure the distance between galaxies uses a ____________ star
Cepheid
___________ ___________ ___________ converts atmospheric nitrogen gas into ammonia
Nitrogen fixing bacteria
How many years ago was the last ice age
2.5 million years
As water on the surface of the ocean freezes, this compound increases in density in the area
Salt
How old is our Sun
4.603 billion years
The Red/Blue shift was first observed by this scientist
Edwin Hubble