The Universe
Look at this picture of the earth and the moon. At which spot is the gravitational pull on the spacecraft from the moon the strongest?
D
Kepler's First Law states that orbits are shaped like this
Ellipse
What type of light can humans see?
Visible light
which stars are hot and dim?
D
True or False
The planets all orbiting in the same direction the sun rotates IS evidence they all formed from the same nebula
True
Put the following objects in order from smallest to largest:
-Galaxy cluster
- Solar system
- Mars
- The Sun
- The Solar System
-Jupiter
-The Sun
-The Solar System
-Galaxy
-Galaxy Cluster
If this planet is orbiting the sun, at what location is it moving at the greatest speed?
(A,B,C, or D)
B
Compared to Blue light, how would the wavelength size and energy level of red light compare?
Bigger size, lower energy
That galaxies farther from us are moving faster implies that the whole universe is
expanding
True or False
Elements in the solar system were evenly distributed throughout it
False - light elements were pushed out farther, leading to gas giants
The birth place in the universe for new stars have these 2 characteristics
Cold & Dense
These 2 things determine the gravitational pull between 2 objects
Mass & Distance
If the lab sample is not moving, which object is moving the fastest?
Galaxy C
TRUE OR FALSE:
There is a DIRECT relationship between a galaxy's velocity (speed) and its mass
FALSE
Velocity and Distance
If red giants are the same temperature as red dwarfs, why are red giants brighter
they are bigger
If Gravity = M1M2/r2
Calculate the gravitational pull between two objects where the masses are 300kg and 200kg, and the distance between them is 50km
24G
Look at this picture of the earth and the moon. At which spot does the gravitational pull on the spacecraft net zero (equal from both objects)
C
In this photo, are the galaxies moving away from us, towards us, both, or not moving?
Away
The universe has Hydrogen and Helium in this ratio:
3:1
Two forms of heat transfer that take place in the sun are:
radiation & Convection
What property of a star determines it's entire lifecycle?
Mass
If Orbital Period is the equation:
P2 = A3
Then how long does it take a planet that is 4AU (Astronomical Units) from the sun to make a full orbit?
8
WE ARE GALAXY B. When ranking of the speeds of the other galaxies, which is the fastest?
A,D,C, or F
F
Besides speed, what else can emission spectra tell us about stars?
Composition (what they are made of)
When all is said and done and NO ENERGY is left, our sun will be a
black cinder/dwarf