Hydrology
What percentage of the water on Earth is Freshwater?
is Saltwater?
Freshwater – 3%
Saltwater – 97%
What is climate?
Average weather conditions over a long period of time.
What are the phases of the moon starting with the moon between the sun and the earth?
New Moon
Waxing Crescent
1st Quarter
Waxing Gibbous
Full Moon
Waning Gibbous
3rd Quarter (Last Quarter)
Waning Crescent
New Moon (repeats itself)
Why is life possible on Earth? (3 reasons)
Temperature range makes life possible.
Presence of water
Breathable atmosphere (nitrogen and oxygen)
How do clouds form?
Clouds form when water vapor cools and changes into liquid water drops in the atmosphere forming clouds.
Condensation!
What is the composition of the Earth’s atmosphere?
78% Nitrogen
21% Oxygen
1% Other gases
What does Earth do every 24 hours
Rotate on it's Axis
What is the composition of a comet?
Ice, rock and dust
What is salinity?
Salinity is the amount of solid material that is dissolved in a certain amount of liquid.
. What happens in the stratosphere? How does temperature change as you increase in altitude?
Protective Ozone Layer
Jets Fly
Temp increases
What does earth do every 365 days
Revolves around the Sun
What's the difference between a Meteoroid, Meteor, and Meteorite ?
Meteoroid - Floats in Space
Meteor - Comes through Earth's Atmosphere
Meteorite - Hit's Earth's surface
Define a mid-ocean Ridge
An underwater mountain range
What type of weather is associated with a cold front?
Fast moving storms
Cooler Temperatures
Clear skies after
What causes Earth's seasons
The tilt of Earth's Axis
Difference between Geocentric and Heliocentric Model's (Bonus * name the scientists who created these models)
Geo- Earth in the center (Ptolomy)
Helio - Sun in the center (Copernicus)
How are surface currents and
deep ocean currents different?
Surface currents are controlled by
wind. Deep ocean currents are
controlled by water density ( salinity
and temperature).
What type of weather is associated with a stationary front?
Many days of cloudy,
wet weather
What order are the earth, moon and sun in for a lunar eclipse to occur?
Sun, earth, moon
What is the difference between a Solar System and a Galaxy?
Solar System consists of a sun and everything around it.
Galaxy consists of billions of stars and their solar systems