Forces
We don't feel gravity between two of us because we are:
too small
Rotation defines
how a planet spins on its axis
one light year
Seasons most come from this property of earth
Most models of the solar system are not to scale bcause
the distance and the sizes are far too big
Which has more gravity - a planet that weighs
5.9 * 10^24 kg
or a planet that weighs
6.39*10^23 kg?
5.9*10^24 kg
Revolution defines
how long a planet takes to orbit its star
Stars and solar systems are formed from
nebulas
While the northern hemisphere is in summer, the southern hemisphere must be in
The Sun contains _________ of the solar system's mass
99.9%
What has the most gravity in our solar system?
The Sun
Axial tilt defines
how the planet sits relative to its star
After a star runs out of fuel, it will become a
Red (super)giant
The angle of insolation defines
the angle at which light hits the earth
How long does the lunar cycle take?
28 days (1 month)
The two factors that affect gravity are:
Mass and distance between the objects
On earth, which is longer - a rotation or a revolution?
a revolution
A planet that is not found in our solar system is called a
exoplanet
Zodiac constellations can only be seen at certain times of year due to
Earth's position in its revolution
Waxing moons are getting _________, waning moons are getting _________.
brighter, dimmer
The center of most galaxies contains a super massive __________________
black hole
False - it spins along its axis
~5000
If you wanted to live on a planet with no seasons, you should go to a planet that
Every body in the solar system is always _________% covered in light from its star.
50%