Midterm Flashcards
(14 cards)
1
Q
How long ago was the earth created?
A
4.6 billion years
2
Q
What is the third planet from the sun?
A
Earth
3
Q
What are the 4 Galelian moons?
A
Io, Europa, Ganymede, and Calisto
4
Q
What 2 planets rotate backwards?
A
Venus and Uranus
5
Q
Which direction does an ion tail of a comet point?
A
Away from the sun.
6
Q
How did the solar system form?
A
Nebular Hypothesis
7
Q
Two moons of Mars?
A
Deimos and Phobos
8
Q
Who discovered Uranus?
A
Sir William Herschel in 1781
9
Q
Who discovered Neptune?
A
Urbain Le Verrier
10
Q
What happens in 11,000-14,000 years?
A
The north star becomes Vega
11
Q
Copernicus unfortunately still used _____
A
Circles
12
Q
What did Kepler discover?
A
Planets orbited in ellipsis, not circles.
13
Q
What wave types does the atmosphere not block?
A
Radio and visible.
14
Q
What is Arecibo?
A
A very large hole in the ground.
