- in simple terms the suns a big glowing ball of gas
- mostly hydrgogen & helium
- high temperatures cause atoms to be in ionized form - plasma
- everything is in the form of a gas.
Jupiter's chemical composition is closest to that off
Ptolemy's Geocentric Model
-did predict the planets positions reasonably well
- daily motion due to rottaion of larger circle
- retrograde motion accurs when epicycle carries planet in reverse direction
- discrepancies remained, this epicycle model didnt
- latin for scientia= knowledge
- asking questions
- gaining knowledge
prposed explanation for some property of the universe
- must fit current observation/evidence
- not well tested or supported
hypothesis that has been throughl
some form of atoms are unstable and spontaneously break apart into lowermass element
No, only good for < 60 000 years
would carbon dating be good for determining the age of the solar system (half
life of 5730 years)?
Half-life of Potassi
What makes Astronomers think that Uranus
was hit by a large body early in its period?
It's rotation axis has such a large tilt.
Neptune was discovered.
By looking at a position predicted by calculations
What gives Neptune its blue color?
Methane gas absor
What evidence indicates that part of the
Earth;s interior is liquid?
No S-type seismic waves are detectable at some locations after an
Plate tectonics on Earth are caused by.
Convection in the mantle
Which of the following correctly lists the
A. Branching channels in the shape of
What evidence suggests that liquid water was once present on the Martian
A. Branching channels in the shape of riverbeds
B. High levels of humidity measured spectroscopically in the atmosphere
a spacecraft that in 1974 photographed less than half its surface, and went
into orbit around in 2011 and has already returned great images
the largest crater on Mercury with a diameter of 960 miles.
Surfave feature of Me
Runaway Greenhouse Effect Notes
The Earth and Venus are near each other in the Solar System, and are similar in size,
density, and composition. Based on our understanding of the origin of the Solar
System, we would expect that their initial atmospheres wo
Retrograde motion is the apparent motion of a planet to move in a direction opposite to that of other
bodies within its system, as observed from a particular vantage point. Direct motion or prograde
motion is motion in the same direction as other bodies.