astro 122 review
The age of the universe is _________ billion years. Correct!
13.8 billion (14 billion is an acceptable answer)
How many planets are in our Solar System (as of October 2020)?
14 - 8 planets - 6 dwarf
how hot is the core of the sun
15 million degrees
How fast is the speed of light?
186,000 miles per second
How many miles up does the ISS orbit the Earth?
250- eugene to seattle
In the "Grapefruit Scale", how far away is Earth from the Sun?
2500 miles (washington DC)
How big is the Moon?
2500 miles, size of the continental US, 1/4 of the earth
How many light-years away is our nearest neighbor star?
4
How long ago did life get started on Earth?
4 billion years ago
How hot is the photosphere?
6000 degrees
Outer space is [blank1] miles straight up. Correct!
62
It takes light this many minutes to travel between the Sun and the Earth.
8 light minutes
How many constellations are there in the entire sky?
88
How much of the Earth and Moon is lit up by sunlight right now?
ALWAYS half
he angular size of an object stays the same at all times.
false: changes as it moves closer or farther away from observer
Mount Everest is the tallest mountain in the Solar System.
false: olympus mons
Mars is outside the habitable zone of the Sun.
false; still in just on the outer most part
exoplanets are too far away to take photos of.
false; they appear as dots
What is the process that powers the Sun (and all stars)?
fusion
What is the purpose of a laser guide star system?
it creates an artificial star that a telescope can lock onto which helps adaptive optics systems
Pluto is now designated as a member of the:
kupiers belt
refracting telescopes use
lenses
Pluto is the largest object in the Kupier belt.
false
How hot is the corona
1 million degrees
How many galaxies are visible in the Hubble Ultra Deep Field (HUDF)?
10,000
How large is the diameter of the Milky Way galaxy?
100,000 light years
How many Earths will fit across the diameter of the Sun?
109
How many telescopes are on top of Maunakea?
13
What is the largest type of solar event we discussed?
Coronal mass ejection
Telescopes in space (like Hubble) produce high-quality images because they are closer to the objects they are observing.
FALSE- remember how vast the universe is
There is a spacecraft in orbit around Saturn right now.
False; cassini is dead- shot through plumes of enceladus
Nuclear energy that powers the sun is called
Fusion
What is SETI?
Search for Extraterrestrial Intelligence
what causes seasons
The tilt of the Earth's axis
Humans have sent maps to Earth out into space as part of SETI.
True
We have discovered water on Mars.
True
There is a planet in our solar system inhabited completely by robots.
True. there are rovers on planets
segmented mirrors
a large mirror comprised of smaller mirrors
What kind of material did Miller and Urey find in the "sludge" they made in their experiment?
amino acids
The single biggest obstacle to interstellar travel is:
distance between stars
Adaptive optics is technology that helps correct for distortions caused by atmospheric [blank1].
distortion
The plane of the Solar System is called the:
ecliptic
When we see the Milky Way in the sky from Earth, we see it in a __________ orientation.
edge on
what are the two kinds of galaxies?
elliptical and spiral
reflecting telescopes use
mirrors
When is the Sun the highest in the sky?
noon at summer solistice
Can the biggest telescopes in the world observe the entire Universe?
not even close
What is the "surface" of the Sun called?
photosphere
What is special about the moon Enceladus?
potential life on it, undersurface ocean
what cant be involved when dealing with science?
pseudoscience/metaphysics and divine intervention
what are the two different types of telescopes
refracting and reflecting
What is the habitable zone?
region around a star where liquid water could be present on a planet's surface
What is the name scientists have given to the very first life form on Earth?
root
What was the first research result from the Robbins telescope?
supernova
What quantity determines how an object will emit radiation?
temperature
where does fusion occur?
the core
the solistice represents when...
the sun is the highest and lowest in the sky
The Hubble Space Telescope can take pictures of individual stars in the Andromeda galaxy.
true
What two regions of the EM spectrum do these windows allow to pass through the atmosphere?
visible and radio waves
Are there always constellations in the sky?
yes
