L1 Flashcards
is the only planet in the solar system known to harbor life.
Earth
all solar system by order
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
what are the terrestrial planets
Mercury, Venus, Earth, Mars
What are the Jovian Planets
Jupiter, Saturn, Uranus, Neptune
The Earth is in what we call the _____.
“Goldilocks Zone”
What evidences show that the Earth is in the right position in the solar system?
Temperature
Atmosphere
Energy
Nutrients
Life seems to be limited to a temperature range of________. In this range, liquid water can still exist under certain conditions.
-15oC to 115oC
Earth have the right size to hold a sufficient _____.
atmosphere
Earth’s atmosphere is about _____ thick.
100 miles
It keeps the surface warm and protects it from radiation and small- to medium-sized meteorites.
Atmosphere
thin atmosphere in planets
Mars
thick atmosphere in planets
Jupiter
With a steady input of either light or chemical energy, cells can run the chemical reactions necessary for life.
Energy
All solid planets and moons have the same general chemical makeup, so _____ are present.
nutrients
is the only place in the known universe confirmed to host life and is the only one known for sure to have liquid water in the surface.
Earth
These are reasons why planet earth is a unique one:
(1) It has liquid water; (2) Plate Tectonics; and (3) It has atmosphere that shelters it from the worst of the sun’s rays.
is the only planet in the solar system that has a large amount of liquid water.
Earth
About_____of the surface of the Earth is covered by liquid or frozen water.
70%
Earth is sometimes called “_____.”
blue planet
Earth has the right chemical ingredients for life including ____and_____.
water and carbon
Earth can provide ____ and ___useful biological products for human, and has suitable weather and climate.
water, oxygen
made of solid rocks and silicates
Earth, Venus, Mercury and Mars
They both have water
Earth and Mars
They all have an atmosphere
terrestrial planets
They all almost have the same time to rotate on their axes
terrestrial planets
They all have carbon dioxide; and
All have landforms
terrestrial planets.
has no water
Venus
These two planets don’t have oxygen
Venus and Mars
