General Science
Way back when...(first material)
More stars
Science concepts
Stars
100
This graph shows
Earnings per day
100
Velocity definition
Speed in a direction
100
Brightness and Luminosity.
Which one is absolute magnitude?
Luminosity.
Brightness = apparent magnitude
100
A galaxy is blue-shifted, which way is it moving?
Towards us
100
Rank the following colors from most hot stars to least hot stars:
Orange, Yellow, Blue, Red, White
Blue, white, yellow, orange, red
200
Definition of matter
Anything that has mass and takes up space
200
Acceleration definition
Change in speed
200
Elements fused in the core of a massive star
Hydrogen up to Iron
200
First state of matter (Think Big Bang)
Plasma
200
What is released when hydrogen fusion occurs in the core of a star?
energy!
300
Definition of mass
How much matter something has
300
Difference between velocity and acceleration
velocity is in a direction
300
What elements were present at the beginning of the universe?
Hydrogen, Helium, Lithium (Take answer with just H and He)
300
Galaxies are moving away from us, what does this mean for the universe?
It is expanding in all directions
300
What do all Main sequence stars do that classify them as main sequence stars?
Fuse Hydrogen into Helium
400
Difference between mass and weight
Mass is the amount of "matter" in an object.
Weight is the force exerted on an object by gravity.
Someone on the moon has the same mass (amount of matter), but the gravity is less, so weight is less.
400
Earth's Spheres (4)
Geosphere
Hydrosphere
Biosphere
Atmosphere
400
Elements that are heavier than iron are formed from
Supernova
400
What is happening to frequency and wavelength if a star is moving towards us?
Frequency = increasing
Wavelength is getting shorter
400
(3) Inner layers of our sun
Core
Radiative Zone
Convective zone
500
What is Newton's First Law?
An object will not change motion unless a force acts on it.
500
Snow melting on a mountain forming a stream
Which of Earth's spheres are primarily involved here?
Geosphere, Hydrosphere
500
3 evidences of the Big Bang that we talked about
- Ratio of elements throughout the galaxy (70% H, 28% He, larger elements way less present)
- Cosmic Microwave Background Radiation
- Red-shift of almost all galaxies
500
You observe the following spectra from a galaxy, what can you conclude?
The spectra is red-shifted and the galaxy is moving away from us.
500
What are 6 stages of our Sun's life cycle in order?
Nebula -> Protostar -> Main sequence -> Red Giant -> planetary nebula -> White dwarf -> Black dwarf