Components of the Universe

Which of the following components of the universe is best described as an interstellar cloud of dust and gases where stars can form?

• a nebula

• a planet

• a meteor

• a galaxy

Which of the following describes a nebula?

• A cloud of gas and dust where new stars form

• An oval-shaped cluster of densely packed stars

• An explosion at the end of a giant star’s life

• A star and all the planets that revolve around it

Which of the following best describes a nebula? A nebula is -

• a region in the solar system that is occupied by irregularly shaped bodies

• a large and icy celestial body with an irregular orbit around the Sun.

• a natural satellite created by the collision of two large asteroids.

• an interstellar cloud of dust, hydrogen, helium and other gases.

Which of the following best describes a galaxy? A galaxy is -

• a particle of debris in the solar system that does not act as a satellite of any planet.

• a visible body of liquid or frozen crystal droplets suspended above a planetary surface

• a massive system of stars, gas, dust and dark matter bound together by gravity.

• the visible path of a meteoroid as it enters Earth’s atmosphere.

Tags

NGSS.MS-ESS1-2

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

Which of the following is the largest component of the universe by mass-energy content?

• Dark energy

• Dark matter

• Stars

• Galaxies

What is the primary component of stars?

• Carbon

• Oxygen

• Hydrogen

• Iron

Tags

NGSS.HS-ESS1-1

Which of the following best describes a black hole?

• A region of space with a strong gravitational pull where nothing can escape

• A large cloud of gas and dust

• A small rocky body orbiting the Sun

• A bright star at the end of its life cycle

Tags

NGSS.HS-PS2-4

What is the main difference between a galaxy and a solar system?

• A galaxy contains billions of stars, while a solar system contains one star and its planets

• A solar system is larger than a galaxy

• A galaxy is a single star with planets

• A solar system contains multiple galaxies

Which of the following is a characteristic of dark matter?

• It emits light

• It interacts with electromagnetic forces

• It has mass but does not emit light

• It is made of atoms