Space Questions

Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

• Star 1 is cooler and less bright than Star 2.

• Star 1 is hotter and brighter than Star 2.

• Star 1 is cooler and brighter than Star 2

• J Star 1 is hotter and less bright than Star 2.

Which of these correctly compares the masses of different objects in the universe?

• A moon has less mass than a star and more mass than the planet it orbits.

• A planet has less mass than a galaxy and more mass than the star it orbits.

• A galaxy has less mass than a moon and more mass than a planet.

• A star has less mass than a galaxy and more mass than a planet.

Tags

NGSS.MS-PS2-4

With the use of the Hubble Space Telescope, scientists recently discovered a giant runaway star. It is 90 times larger than the sun and is very hot and blue-white in color. Why does the Sun appear to be brighter than this runaway star when viewed from Earth?

• The sun is a different color than the runaway star.

• The sun is older than the runaway star.

• The sun is closer to Earth than the runaway star.

• The sun is made of different elements than the runaway star.

A star that is several thousand times brighter than the sun with a temperature lower than

4,000 K would be classified as —

• a main-sequence star in spectral class B

• a supergiant in spectral class K

• a main-sequence star in spectral class K or M

• a white dwarf in spectral class B

Tags

NGSS.HS-ESS1-3

In November 2013 an object orbiting the sun seemed to disappear behind the sun. When a satellite did not detect the object, astronomers thought that the object had been destroyed when it passed close to the sun. However, when another satellite detected a small, bright object with a fan-shaped tail, astronomers proposed that the object was not destroyed. What type of object were astronomers most likely observing?

• A comet

• An asteroid

• A meteor

• A nebula

Tags

NGSS.MS-ESS1-3

Which statement about stars is correct?

• Star formation begins in a nebula.

• White dwarfs become main-sequence stars when they gain mass.

• Supergiants are stars that can absorb black holes.

• Main-sequence stars are formed by comets.

Tags

NGSS.HS-ESS1-3

The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?

• Earth is a part of this galaxy.

• Many more stars exist outside the galaxy.

• The stars in the center of the galaxy are extremely small.

• The center of the galaxy consists of a dense cluster of stars.

Why does Earth get more energy from the sun than from all the other stars in the universe combined?

• The sun is much larger than the other stars.

• The sun is much hotter than the other stars.

• The sun is much more dense than the other stars.

• The sun is much closer than the other stars.

The investigators were most likely using a telescope that detects —

• microwaves

• visible light

• x-rays

• gamma rays

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

The universe has many different components. Which list places four components of the universe in the most likely order from smallest to largest?

• Planets, stars, galaxies, nebulae

• Nebulae, stars, planets, galaxies

• Galaxies, stars, planets, nebulae

• Planets, stars, nebulae, galaxies