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9th Grade Science Resources
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What Causes Weather?
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9th Grade Science Resources
Home
Hydrology
Community Uses of Water
Earth's Reservoirs
Unique Properties of Water
Water Cycle
Water Conservation
Water Quality
Water Quality Data
Water Shortage
Astronomy
Big Bang Theory
Blueshift & Redshift
Cosmic Radiation
Life on Earth
Life Cycle of the Stars
Planets: Our Solar System
Solar System Formation
The Scale of the Universe
The Atmosphere & Life on Earth
Air Pollution
The Atmosphere
The Carbon Cycle
Climate Change
Energy & Latitude
Greenhouse Effect
Ozone Layer
Sunlight
Storms
What Causes Weather?
Weather Forecasting
Inside the Earth
The Earth's Interior
Plate Tectonics
The Earth's Layers
Extinction
Earthquakes
Volcanoes
Magma
Landscape Features
People and the Planet
Ecosystems
Technology
Feedback Loops
Natural Hazards
Human Activities
Science Language
More
Home
Hydrology
Community Uses of Water
Earth's Reservoirs
Unique Properties of Water
Water Cycle
Water Conservation
Water Quality
Water Quality Data
Water Shortage
Astronomy
Big Bang Theory
Blueshift & Redshift
Cosmic Radiation
Life on Earth
Life Cycle of the Stars
Planets: Our Solar System
Solar System Formation
The Scale of the Universe
The Atmosphere & Life on Earth
Air Pollution
The Atmosphere
The Carbon Cycle
Climate Change
Energy & Latitude
Greenhouse Effect
Ozone Layer
Sunlight
Storms
What Causes Weather?
Weather Forecasting
Inside the Earth
The Earth's Interior
Plate Tectonics
The Earth's Layers
Extinction
Earthquakes
Volcanoes
Magma
Landscape Features
People and the Planet
Ecosystems
Technology
Feedback Loops
Natural Hazards
Human Activities
Science Language
Life on Earth:
Earth's ability to support life
Khan Academy: Life on Earth and In the Universe
What Makes Earth So Perfect for Life?
The newfound alien planet Alpha Centauri Bb is the closest yet found and Earth-size but likely doesn't host alien life. So why is Earth the only known planet with life?
Finding Life Beyond Earth is Within Reach
Many scientists believe we are not alone in the universe. It's probable, they say, that life could have arisen on at least some of the billions of planets thought to exist in our galaxy alone -- just as it did here on planet Earth.
NASA Telescope Reveals Record-Breaking Exoplanet Discovery
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
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