8th Grade Science Mid-Term Exam Vocabulary

A galaxy is:

• A large system of stars, gas, and dust bound together by gravity.

• A small cluster of planets orbiting a star.

• A single star with its own solar system.

• A type of comet found in the outer solar system.

Tags

NGSS.MS-ESS1-2

What does the Hertzsprung-Russell diagram show?

• The relationship between a star's brightness and temperature

• The lifecycle of a star

• The distance of stars from Earth

• The chemical composition of stars

What is luminosity?

• The measure of the amount of light emitted by a star or other celestial body

• The measure of the distance between two celestial bodies

• The measure of the temperature of a star

• The measure of the gravitational pull of a planet

A star is:

• a celestial body that generates light and heat through nuclear fusion

• a planet that orbits around a sun

• a satellite that reflects light from the sun

• a comet that travels through the solar system

A neutron star is:

• a type of star that is primarily composed of neutrons

• a star that is in the process of forming

• a star that has exhausted its nuclear fuel and collapsed

• a star that is undergoing nuclear fusion

A protostar is:

• a fully formed star

• a star in its early formation stage

• a dying star

• a type of planet

Tags

NGSS.HS-ESS1-3

What is a giant star?

• A star that is significantly larger and more luminous than a main-sequence star of the same temperature.

• A star that is smaller and less luminous than a main-sequence star of the same temperature.

• A star that is the same size and luminosity as a main-sequence star of the same temperature.

• A star that is only found in binary systems.

A spectral class is a classification of stars based on their:

• Temperature and color

• Size and mass

• Distance from Earth

• Age and luminosity

What is a white dwarf?

• A type of galaxy

• A stage in the life cycle of a star

• A type of black hole

• A type of nebula

What is temperature in the context of stars?

• A measure of the brightness of a star

• A measure of the color of a star

• A measure of the heat energy emitted by a star

• A measure of the size of a star

Tags

NGSS.MS-PS1-4