Components of the Universe Vocabulary

Which of the following best describes a star? A star is a celestial body -

• composed of rock and metal with a very high density.

• that is too big to be an asteroid, but too small to be a planet.

• that rotates on an axis and revolves around the Sun.

• composed of gases that emit light due to nuclear reactions.

Stars are made mostly of which two elements?

• hydrogen and helium

• mercury and strontium

• iron and potassium

• krypton and bismuth

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

A massive collection of gas, stars, and dust is known as a 

• solar system

• galaxy

• sun

• planet

Match the following

• Elliptical Shaped Galaxy

• A galaxy with a long oval shape, a bright center, no apparent internal structure or spiral arms, and very little dust or gas

• Black Hole

• A large grouping of stars in space

• Galaxy

• The remains of a star or other large object that collapsed under its own gravity to form a superdense object with gravity so strong that light cannot escape its pull

A large cloud of gas and dust in interstellar space; the predecessor to stars...

• Constellation

• Black hole

• Nebula

• Galaxy

All stars start as gas and dust in a(n)

• nebula

• black hole

• red giant

• black dwarf

Which of the following is a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space?

• A) Solar System

• B) Galaxy

• C) Nebula

• D) Asteroid Belt

Tags

NGSS.MS-ESS1-2

What is the term for a celestial body that orbits a star and is massive enough to be rounded by its own gravity, but not massive enough to cause thermonuclear fusion?

• A) Comet

• B) Asteroid

• C) Planet

• D) Meteor

Tags

NGSS.MS-ESS1-3

Which of the following best describes a black hole?

• A) A region of space having a gravitational field so intense that no matter or radiation can escape

• B) A large cloud of gas and dust in space

• C) A small rocky body orbiting the sun

• D) A bright object in the night sky

What is the primary component of a star?

• A) Iron

• B) Carbon

• C) Hydrogen

• D) Oxygen

Tags

NGSS.HS-ESS1-1