8.8a, 8.8b, 8.c

8.8a, 8.8b, 8.c

8th Grade

12 Qs

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8.8a, 8.8b, 8.c

8.8a, 8.8b, 8.c

Assessment

Quiz

Other Sciences

8th Grade

Hard

Created by

Charles Martinez

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Barnard's Star is about 5.9 light-years from the sun. The star has an approximate temperature of 2,800 K.

Based on the diagram, what spectral class does Barnard's Star belong to?

Spectral class O

Spectral class B

Spectral class A

Spectral class M

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The Hertzsprung-Russell diagram shows how the sun is classified among the stars.

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

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Two stars are identified on the Hertzsprung-Russell diagram.

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.

Star 1 is hotter and less bright than Star 2.

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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.

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

A Hertzsprung-Russell diagram is shown.

Based on this diagram, which type of stars would belong to spectral class M and have the highest luminosity?

Main-sequence stars

Giants

White dwarfs

Supergiants

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