WorksheetsThe Universe
Total questions: 11
Worksheet time: 11mins
The explosion associated with the theory and the formation of the universe is inferred to have occurred how many billions of years ago?
less than 1
2.5
4.6
13.7
Which statement best describes galaxies?
They are similar in size to the solar system.
They contain only one star but hundreds of planets.
They may contain a few hundred stars in a space slightly larger than the solar system.
They may contain billions of stars in a space much larger than our solar system.
In which list are celestial features shown in order of increasing size?
galaxy - solar system - universe - planet
solar system - galaxy - planet - universe
planet - solar system - galaxy - universe
universe - galaxy - solar system - planet
The theory that the universe is expanding is supported by the
blue shift of light from distant galaxies
existence of cosmic background radiation
nuclear fusion occurring in the Sun
radioactive decay occurring in the Sun
What does a red shift in light from distant galaxies indicate to a scientist on Earth?
The gravitational force on Earth changes.
The universe appears to be expanding.
The Jovian planets are aligned with the Sun.
Galaxies are becoming more numerous.
The Big Bang Theory, describing the creation of the universe, is most directly supported by the
red shift of light from distant galaxies
presence of volcanoes on Earth
apparent shape of star constellations
presence of craters on Earth's Moon
The diagram shows the spectral lines of hydrogen gas from three galaxies, A, B, and C, compared to the spectral lines of hydrogen gas when it is observed in a laboratory. What is the best inference that can be made concerning the relative movement of galaxies A, B, and C?
Galaxy A is moving away from Earth, but B and C are moving toward Earth.
Galaxy B is moving away from Earth, but galaxies A and C are moving toward Earth.
Galaxies A, B, and C are all moving toward Earth.
Galaxies A, B, and C are all moving away from Earth.
If we observe a Doppler blue shift from a distant star, the star must be
relatively cool in temperature
moving away from us
moving toward us
a blue star
Light and other forms of electromagnetic radiation are given off by stars using energy released during
nuclear fusion
conduction
convection
radioactive decay
Compared with our Sun, the star Betelgeuse is
smaller, hotter, and less luminous
smaller, cooler, and more luminous
larger, hotter, and less luminous
larger, cooler, and more luminous
Which two stars are most similar in luminosity?
Betelgeuse and Barnard's Star
Procyon B and Proxima Centauri
Polaris and the Sun
Alpha Centauri and Sirius
