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by BlastRoom
Students interpret redshift, Hubble plots, microwave background evidence, expansion, and cosmic age scale.
#earth_space_science
25 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
Compare the galaxy's hydrogen lines with the lab hydrogen lines. What does the shift indicate?
Compare Galaxy B's hydrogen lines with the lab hydrogen lines. What motion does the shift show?
Compare the Galaxy A and Galaxy B spectra with the lab lines. Under Hubble's law, what does Galaxy B's shift show?
Why compare a distant galaxy's spectral lines with lab hydrogen lines before interpreting its redshift?
Use the spectrum scale for the red hydrogen line. About how much longer is the galaxy line than the lab line?
The shifted galaxy lines keep the same spacing pattern as lab hydrogen. What does that matching pattern show first?
The Hubble plot's trend line slopes upward from left to right. What relationship does this show?
Use the Hubble plot's trend line to estimate the recession speed of a galaxy 600 million light-years away.
Use the Hubble plot to estimate the distance of a galaxy with a recession speed of 8,000 km/s.
One plotted galaxy does not fall on the Hubble trend line. Compared with the trend, what is unusual about that galaxy?
Use the plotted trend to estimate the recession speed at 450 million light-years.
From the plotted trend, how much does recession speed increase for each additional 100 million light-years of distance?
A microwave sky table shows nearly the same temperature in every direction. What Big Bang evidence does that represent?
The table shows the makeup of early matter. Which category of evidence for the Big Bang is this?
A 2.725 K blackbody microwave glow fills the sky. What model predicts this leftover radiation?
Why are tiny temperature variations in the cosmic microwave background important?
Why do the observed abundances of hydrogen and helium support the Big Bang model?
In modern cosmology, what is expanding when distant galaxies move apart?
In a rising raisin-bread model, every raisin sees other raisins moving away. What does this model represent?
In uniform expansion, galaxy A is twice as far from an observer as galaxy B. How should A's recession speed compare with B's?
Why does seeing galaxies recede in every direction not prove the Milky Way is at the universe's center?
The Big Bang is best described as what kind of event?
Use the timeline to compare the universe's age with Earth's age.
Current expansion-rate measurements place the universe's age closest to which value?
If a 1-meter tape represents 13.8 billion years from the Big Bang to today, Earth formed 4.6 billion years ago. How far from today is Earth's formation?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
25 questions
