WorksheetsFormation & Motion of Galaxies
Total questions: 13
Worksheet time: 7mins
What is the primary component of a galaxy?
Only asteroids and dust
Unidentified objects that can be seen using powerful telescopes
Multiple stars larger than our sun
Billions of stars and things that orbit them held together by gravity
What holds objects and systems in the universe together?
The Sun
Infrared radiation
Star clusters
Gravity
What is the estimated age of the universe?
13.7 billion years
30 billion years
13.8 million years
4.5 billion years
What is the most widely accepted theory about how the universe was formed?
Steady State Theory
Universe Formation Theory
Big Blast Theory
Big Bang Theory
What observation led Edwin Hubble to conclude that the universe is expanding?
He noticed that the stars are getting bigger over time
He observed that the light from distant galaxies is blue shifted
He observed that the light from distant galaxies is red shifted
He found that galaxies are leaving a trail of dust and debris as they move away
What is the expected motion of planets in a newly formed solar system?
The planets will revolve around the star while also rotating on their own axis
The planets will revolve around the galaxy's central black hole, not the star
The planets will revolve around the star, but will not rotate on their own axis
The star will orbit around the planets, which will be situated in the center
What causes celestial bodies in the universe to spin and orbit?
The spin and orbit of celestial bodies are a result of the gravitational pull of larger bodies and the initial momentum from the collapse of dust and gas clouds
Celestial bodies do not spin or orbit in the universe
Unique magnetic fields in the universe cause celestial bodies to spin and orbit
There is no scientific explanation for the spin and orbit of celestial bodies in the universe
What process led to the creation of the planets in our solar system?
Planets were formed from the debris of a supernova explosion
Planets were formed from the cooling and solidification of stars
Planets were formed from the gravitational pull of gas and dust in a rotating disk
Planets were formed from the fragmentation of a larger celestial body
What process led to the formation of planets in our solar system?
Planets were formed from the leftover dust and gas that didn't become part of the Sun
Planets were formed from the remnants of a supernova explosion
Planets were formed from the gases produced by the Sun's nuclear fusion
Planets were formed from the nebulae surrounding the Sun
What causes the rotation of objects around the center of a galaxy?
The gravitational pull from the densely packed stars and possibly a massive black hole at the center of the galaxy
The objects in the center are tightly packed and constantly collide with each other
The repulsion from a giant black hole at the center of the galaxy
The center of the galaxy has the highest number of planets
How does the Doppler effect relate to the observation of distant galaxies in the universe?
It explains the blue shift
It explains the red shift
It explains the gravitational pull
It explains the fast motion
What type of galaxy is characterized by a bright nucleus and tightly wound arms, often giving it a circular appearance?
Spiral
Elliptical
Barred spiral
Irregular
What is the shape of a galaxy composed of clusters of stars that are unevenly spaced and has no specific shape?
Spiral galaxy
Elliptical galaxy
Irregular galaxy
Spectacular galaxy
