Show:
Words We Use
Long, Long Ago
Leftovers Again?
On, Comet…!
Not Always What it Seems
100
The theory stating that the Universe began as a dense, super-hot, supermassive ball that suddenly spread out in all directions.
What is the Big Bang Theory?
100
This is what scientists say happened before there were any stars and planets in the Universe.
What is The Big Bang?
100
The section of our Solar System between the orbits of Mars and Jupiter contain this group of debris. (2X for name and debris composition.)
What is the Asteroid Belt? What is rocky?
100
Comets are composed of rocky & metallic materials held together by these. (2X for two)
What are frozen water, ammonia, methane, carbon dioxide, and carbon monoxide?
100
Most of our information about our Solar System comes not from aliens, but from this human activity.
What is space exploration, including the Apollo 11 Moon landing?
200
Large groups of stars, dust, and gases held together by gravity. (2X for general name and for the name of ours.)
What are galaxies? What is the Milky Way?
200
A cloud of dust and gas that eventually produces a star.
What is a solar nebula?
200
A meteoroid can be described this way.
What is a small particle that travels through space?
200
This energy from the sun vaporizes a comet’s frozen gases.
What is the Solar Wind?
200
“Shooting Stars,” including the Perseids, are actually these.
What are meteors that burn up as they enter the Earth’s atmosphere?
300
The Doppler shift towards the red end of the light spectrum shown by most galaxies.
What is the Red Shift?
300
A solar nebula rotates and then contracts due to this force.
What is gravity?
300
A meteoroid is a meteor when this happens, and is this when it actually reaches Earth’s surface. (2X for both)
What is a meteor (atmosphere)? What is a meteorite (surface)?
300
Comet tails point in this direction. (2X for direction & why it is so.)
What is away from the sun? What is the solar wind?
300
Dense objects with gravity so strong that not even light can escape their surface are called this.
What are Black Holes?
400
This is the measure of a star’s brightness.
What is a star’s magnitude?
400
When a solar nebula reaches a temperature of 10,000,000 degrees this reaction occurs, forming a star.
What is nuclear fusion?
400
Our Solar System contains one star, 8 planets, and two other types of bodies. (2X for both)
What are asteroids and comets?
400
This is the most famous comet from the Kuiper Belt.
What is Halley’s Comet?
400
Galaxies are retreating from us at a speed that is proportional to their distance.
What is Hubble’s Law?
500
This is the difference between apparent magnitude and absolute magnitude.
What is a star’s brightness from our POV and its actual brightness?
500
After a star is born, these other bodies continue to revolve around the star and are the beginnings of planets.
What are planetesimals?
500
Some other objects that revolve around our sun (not planets & asteroids) travel in these regions of the Solar System. (2X for both)
What are the Kuiper Belt and the Oort Cloud?
500
The gravitational pull of this Jovian planet can be said to protect us from comets that otherwise might crash into Earth. (2X for planet & how)
What is Jupiter? What is deflecting them or causing them to crash on Jupiter’s surface.
500
This is why the Red Shift indicates that the galaxies are moving away from us, not toward us. (2X for complete answer)
What is that approaching objects shift toward shorter blue wavelengths, but objects moving away shift to the longer red wavelengths.