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53 Cards in this Set

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What are the gas giants?
Jupiter, Saturn, Uranus, and Neptune
What is the most massive planet?
Jupiter
The great Red Spot is a storm where?
on Jupiter
What is a meteroid?
A chunk of rock or dust in space
What do meteroids usually come from
Comets or asteroids.
How many moons does Jupiter have?
4
What is the second largest planet in the solar system?
Saturn
What is a meteroid called when it passes through Earth's atmosphere and hits Earth's surface?
A meterorite
What are the outer planets?
Jupiter, Saturn, Uranus, Neptune,& Pluto
What are Saturns rings made out of?
Chunks of ice and dust
How many moons does Saturn have?
5
Why does Uranus look blueish?
Because of traces of methane in its atmosphere.
How many moons does Uranus have?
20
How was Neptune discovered?
Uranus was not following its predicted orbit and astronomers thought it was due to another planets gravational force.
How many moons does Neptune have?
8
What is the name of plutos moon?
Charon
Why are Pluto and Charon considered to be one planet.
Since pluto is about 2/3 the size of Earth's moon and Charon is about 1/2 the size of that they are consuidered to be a single planet.
What is the streak of light crested by a meteroid?
A meteor
Which system does our solar system have?
Heliocentric
how does Pluto differ from the gas giants and what is it more like?
Pluto is small and has a rocky surface while the gas giants are made mostly of gas and have no surface. It is more like the terrestrial planets.
what is a comet?
A comet is a chunk of ice or dust
What are comets orbits like?
They are very long narrow ellipses
what are asteroids?
Small planet like rocks
where are most asteroids found and what is this place called?
They are mostly found revolving around the sun between Mars and Jupiter.
This is known as the asteroid belt.
What percent of the sun is hydrogen?
75%
What percent of the sun is helium?
25%
How old is the sun?
5 billion years old?
A small amount of the sun is what?
chemical elements.
True or False:
The sun is the most powerful force in the solar system?
True
What is the North stars name?
Polaris
What is a geocentric system?
It is when Earth is the center of revolving planets.
What did Kepler discover about the orbit of each planet?
That each orbit has an ellipse.
What shape is the ellipse?
An oval shape
What is inertia?
Inertia is the tendency of a moving object to continue in a straight line or for a stationary objet to remain in one place.
The sun is what?
A ball of glowing gas.
The sun's energy comes from _______ ______ inside.
Nuclear fusion
What percent of the mass in the solar system comes from the sun?
99.8%
The sun is Earth's main source of what?
Energy
What is nuclear fusion?
It is when hydrogen atoms join together to form helium.
What only occurs under high pressure and temperature?
Nuclear fusion.
The temperature in the sun's center reaches about what degree?
15 million degrees Celcius.
Celcius
True of False:
The temperature in the sun's core is hot enough for nucler fusion to occur?
True.
There is enough hydrogen in the sun to last for how many years?
10 billion years
What is the inner layer of the sun's atmosphere called?
The Photosphere
What is the middle layer of the sun's atmosphere called?
The Chromosphere.l
What is the outer layer of the sun's layer called?
The Corona.
What does the corona send out?
A stream of electrically charged particles called solar wind.
When the solar wind hits Earth, what does it cause?
Auroras.
What are three features on or above the sun?
Sunspots, Prominces, and Solar Flares
What are sunspots?
Areas of gas that are cooler than the areas aruond them.
What are prominences?
Reddish loops of gas.
What are solar flares?
The explosion that hydrogan gas creates when it explodes into space.
What is a heliocentric system?
It is when the sun is the center of the revolving planets?