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WorksheetsCosmology and Life in the Universe Quizizz
Total questions: 50
Worksheet time: 3hrs 3mins
100 billion years from now, what will have happened to current galaxies?
they will contract into black holes, making new Big Bangs
a few galaxies will survive, but most will have flown apart.
they will slow to a stop, no longer expanding
they will remain as they are now, though our Earth and sun will have died out
At what time point in the Universe's history is it theorized that all the forces in nature appear along with particles, neutrons, protons, and electrons?
One second after the Big Bang
500,000 years after the Big Bang
500,000 years ago
Three minutes after the Big Bang
1 million years after the Big Bang
Six billion years after the Big Bang, within galaxies, stars began to form and die within galaxies, often in enormous explosions called _____. The explosions of these stars distribute common elements, such as oxygen, carbon, nitrogen, calcium, and iron into space.
big bangs
supernovas
suns stars
black holes
When was our sun and Milky Way Galaxy formed?
5 billion years ago
500,000 million years ago
500,000 years ago
1 billion years ago
5 million years ago
How long ago did the Big Bang occur?
13 - 20 billion years ago
7 billion years ago
100 billion years ago
13-20 million years ago
7 million years ago
What is cosmic background radiation?
General background radiation coming from a specific place in the universe.
Radiation that starts on Earth and is emitted to the background of space.
Radiation left over from early development of the universe.
Radiation from distant stars.
What is a singularity?
A zone of low pressure and density that is small and hot.
One of something that is big and hot.
An infinitely small, hot area of infinite pressure and density
A zone of specific pressure and low density.
What are the main pieces of supporting evidence for the Big Bang theory?
The universe is expanding
The existence of cosmic background radiation
The ratio of Hydrogen to Helium found in the universe
All answers are correct
When did the Big Bang theory first originate and with whom?
1800's with Newton
1989 with Hubble.
1940's with Einstein.
1920's by Georges Lemaitre
Early 1500's with Galileo.
What does a red-shift prove?
That light exists in the red end of the light spectrum.
That telescopes can detect red light.
That the universe is expanding
That the universe is contracting.
That no light is emitted in the red end of the light spectrum.
This is the model for our universe that states that the average distance between galaxies has been increasing ever since our universe came into existence:
Expanding universe
Hubble inconstant
The Big Bang
Observable universe
The clashing contrasts of theory and observation for why the night sky should or shouldn't be dark is called:
Hubble's paradox
Edgar Allan Poe's paradox
Olbers' paradox
Newton's paradox
Darwin's paradox
Since the universe isn't infinitely old, this helps explain why the sky is dark at night. Simply put, it's dark because:
The human eye cannot see all forms of visible light
Light doesn't exist at the farthest reaches of the universe
There are only a few thousand galaxies in the universe, not enough to light up the night sky
Light hasn't had enough time to reach Earth from all the reaches of the universe
The most distant objects we can see are the ones whose light has traveled _____ to reach Earth.
13.7 billion years
47 billion years
13.7 million years
5 billion years
Light from very distant galaxies is nearly infinitely _____, partially explaining the darkness of the night sky.
Leftshifted
Nightshifted
Redshifted
Blueshifted
The edge of our observable universe is known as which one of the following?
Event horizon
Olbers' horizon
Earth's horizon
Cosmic light horizon
These are packets of electromagnetic energy traveling at the speed of light:
Protons
Neutrons
Electrons
Photons
Positrons
The first seconds of our universe were filled namely with:
UV photons
Visible light photons
Infrared photons
Gamma ray photons
Radio photons
This is the stage of the universe's development where radiant energy would have had a much larger density than that of matter:
Decoupling epoch
Radiation era
Reionization era
Recombination epoch
The reason the universe eventually became transparent to light is because:
All of these answers are correct
Free electrons thinned out as the universe expanded
Nuclei (protons) and electrons could combine without being broken apart by radiation or collision with other particles
It expanded and cooled
Stable atoms formed
The time when the universe became transparent to light, allowing it to travel for great distances, is known as the:
Radiation era
Recombination epoch
Reionization era
Dark Age
Era of early nucleosynthesis
____ means that the universe looks approximately the same in all directions:
Homogenous
Anisocytosis
Anisotropic
Heterogeneous
Isotropic
____ means that one large region of the universe is approximately the same as any other large region of the universe:
Homogenous
Anisotropic
Isotropic
Isometric
Heterogeneous
This is a fundamental principle and assumption of cosmology which says that on a large scale the universe is both homogenous and isotropic:
The Cosmological Principle
The Big Bang Principle
The Hubble Time Principle
The Particle Soup Principle
Based on the cosmological principle, what can we conclude about the universe?
It has no border or center
It has both a center and an edge
It has a center but no edge
It has an edge but not center
The Hubble constant is about:
70 Mpc/s/km
70 km/s
70 s/Mpc
70 km/Mpc
70 km/s/Mpc
A galaxy twice as far away is moving away ___as fast:
Twice
Five times
Three times
Half
Four times
The Hubble Law is:
An inverse relationship between a galaxy's velocity of recession and its distance
A direct relationship between a galaxy's velocity of recession and its distance
A direct relationship between a galaxy's velocity of recession and its mass
An indirect relationship between a galaxy's velocity of recession and its distance
An inverse relationship between a galaxy's velocity of recession and its mass
Our universe is:
Staying the same size
Expanding
We don't know if it's changing or staying the same size
Shrinking
Based on observation and theory we know that the expansion of our universe:
Is accelerating
Is decelerating
Only dynamic in nature
Has stopped
This is a version of the big bang theory that accounts for the very rapid expansion of our early universe:
Multi-verse
Flatness universe
Expansionary universe
Horizon universe
Inflationary universe
On Earth, life is said to be ___based life:
Iron
Carbon
Calcium
Silicon
Neon
The way in which life adjusts over time to external (environmental) changes is called:
Biological evolution
Mutation
Revolution
Natural selection
Life involves:
Metabolism
Reproduction
Growth
Adaptation to surroundings
All of these answers are correct
What scientist is credited with the idea that early life on Earth formed through a series of reactions that made simple compounds gradually more complex?
Darwin
Miller
Oparin
Mendel
Urey
Small, non-living droplets that can regulate their internal environments are best known as _____
eukaryotic cells
antibiotics
viruses
protobionts
prokaryotic cells
How old do most scientists think Earth is?
Less than 1 million years old
There is no way to know
Over 4 billion years old
Over 10 billion years old
Less than 100 million years old
Miller and Urey used all of the following substances to simulate Earth's early atmosphere EXCEPT _____.
hydrogen
methane
ammonia
water vapor
oxygen
This is an equation that estimate the number of communicative civilizations in the Milky Way Galaxy:
The Drake equation
The Cook equation
The Einstein equation
The Magellan equation
The Cortes equation
SETI stands for:
Search for Extra-Tyrannical Intelligence
Signs of Extra-Terrestrial Intelligence
Sirens of Extra-Terrestrial Intelligence
Search for Extra-Terrestrial Intelligence
Signal of Extra-Terrestrial Intelligence
A message that can be easily understood by extraterrestrial intelligent life forms about which we know nothing about is said to be:
Discoded
Uncoded
Anticoded
Decoded
Coded
The search for ET depends mainly on:
The amount of communicative civilizations out there
Our ability to fly out to meet them
Their ability to send a signal to us
Our ability to detect a signal from them
Their ability to visit Earth
A planet orbiting a faraway star is known as a(n):
Exosun
Exoplanet
Extraplanetary mass
Endoplanet
Perisolar planet
Which of these cannot be used to detect an extrasolar planet?
Microlensing
A Doppler shift
All of these concepts are used in helping to detect an extrasolar planet
A change in a star's spectrum
Transit
A __is an event where a smaller object passing in front of a larger one blocks some of the larger object's light and therefore causes a change in its observed brightness:
Microlens
Passage
Transit
Pass
Retrograde
This is a region around a star where a planet having the same approximate size and atmospheric composition as Earth would have a surface temperature that allows for water to exist:
The life giving zone
The habitable zone
The hospitable zone
The inhospitable zone
The inhabitable zone
Organisms that can live in extreme environments are called:
Halophiles
Osmophiles
Extremophiles
Xerophiles
Thermophiles
What is the most basic definition of life?
Being that can adapt, reproduce and metabolize
any kind of being
Being that can think
Being that can adapt, reproduce, metabolize and think
Intelligent being
What is thought to be the one main thing necessary for extraterrestrial life?
Liquid water
A rocky planet
Oxygen
An atmosphere
Proximity to the sun
What 'kind' of life is thought to possibly exist in our solar system in places other than Earth?
Hostile
Thinking, intelligent
Stupid and unintelligent
Little green men
Bacterial or microbial
