25 Stars review

Multiple Choice

Which of the following elements are stars mainly composed of?

• Hydrogen and Helium

• Oxygen and Nitrogen

• Carbon and Oxygen

• Iron and Nickel

Multiple Choice

Which of the following best describes a nebula?

• A huge cloud of dust and gas in space held together by gravity

• A small rocky planet

• A cluster of asteroids

• A comet traveling through space

Multiple Choice

Which of the following are possible end stages for a star with extremely high mass?

• Black Hole

• Neutron Star

• White Dwarf

• Planetary Nebula

Multiple Choice

Our sun is known as a middle-aged, stable star. Also known as a ____________________.

• Gas Giant

• Nebula

• Pulsar

• Main Sequence Star

Multiple Choice

When a star's gravitational pull is so strong that not even light can escape, it's called a what?

• Black hole
• Supernova
• White dwarf
• Nebula

Multiple Choice

The life cycles of stars are determined by their:

• mass (size)

• color

• distance from Earth

• how bright they are

Multiple Choice

What stage fills in the blank. Nebula --> Main sequence --> red giant --> ______________ --> white dwarf --> black dwaft

• supergiant
• planetary nebula
• black hole
• supernova

Multiple Choice

The path a star takes during its life cycle depends solely on its _____.

• temperature
• luminosity
• mass
• location

Multiple Choice

What is the final stage of a very high mass star?

• White Dwarf

• Black Hole

• Red Giant

• Neutron Star

Multiple Choice

What is the final stage of a high mass star?

• White Dwarf

• Black Hole

• Red Giant

• Neutron Star

Multiple Choice

The stage after the main sequence star:

• red giant

• nebula

• white dwarf

• black dwarf

Multiple Choice

What kind of star is Sirius, the Dog Star?

• Main Sequence

• White Dwarf

• Blue Giant

• Red Supergiant

Multiple Choice

Most of the stars on the HR diagram are classified as which type of star?

• White Dwarfs

• Main Sequence

• Giants

• Supergiants

Multiple Choice

Would the surface temperature of a red supergiant be higher or lower than a white dwarf?

• Higher

• Lower

Multiple Choice

What characteristics are used to classify stars?

• Flammability, weight, and reactivity

• Temperature/color and brightness

• Conductivity, luster, and density

• Malleability, distance, and viscoscity

Multiple Choice

Which star is hotter than Deneb?

• Procyon

• Sun

• Rigel

• Barnard's Star

Multiple Choice

Which star is the same temperature and color as the Sun but dimmer?

• Procyon B

• Betelgeuse

• Pollux

• Van Maanan's Star

Multiple Choice

What is the Hertzsprung-Russel Diagram?

• A map which tells the approximate location of stars in the Milky Way galaxy and their distance from Earth.

• A table that alphabetically lists stars by name and includes dates of when the star was first charted.

• A chart which organizes stars into categories based on the amount of Hydrogen they burn.

• A graph used to classify stars according to their luminosity, color, temperature, and stage.

Multiple Choice

When the Sun has run out of Hydrogen, it will move from the Main Sequence of stars and become a ______________.

• White Dwarf

• Giant

• Main Sequence

• Supergiant

Multiple Choice

What type of stars have a high temperature and High luminosity?

• Cool Main Sequence stars

• White Dwarfs

• Supergiants

• Yellow stars

Multiple Choice

What type of stars have a Low temperature and High luminosity?

• Cool Main Sequence stars

• White Dwarfs

• Supergiants

• Yellow stars

Multiple Choice

Stars in group _________ are mostly 6,000 K or cooler yet more luminous than main sequence stars of the same temperature.

• A

• B

• C

• D

Multiple Choice

The frequency of infrared waves is..

• 10¹² Hz
• 10²⁰ Hz
• 10⁴ Hz
• 10¹⁵ Hz

Multiple Choice

What is the correct order of the visible light spectrum starting with the longer wavelength?

• Red, yellow, orange, blue, violet, indigo

• Violet, indigo, blue, green, yellow, orange, red

• Green, yellow, blue, indigo, red, orange

• Red, orange, yellow, green, blue, indigo, violet

Multiple Choice

What is an example of a wave with a long wavelength and low frequency?

• Gamma rays
• Infrared
• Radio
• Visible light

Multiple Choice

This color in the visible part of the spectrum has the smallest wavelength.

• Blue
• Red
• Violet
• Yellow

Multiple Choice

Which wave in the diagram has the greatest frequency?

• 1
• 2
• 3
• 4

Multiple Choice

Which has a higher frequency?

• Wave N

• Wave O

• Same frequency

• There is no frequency

​

​- Name of Author

Stop and wait. Do not close your computer.

Multiple Choice

Which of the following best describes a galaxy?

• A small group of planets orbiting a star

• A large collection of stars, gas, and dust held together by gravity

• A single star surrounded by asteroids

• A cluster of moons and comets

Multiple Choice

Which of the following is NOT a classification of galaxy shape?

• Spirals

• Ellipticals

• Irregulars

• Rectangulars

Multiple Select

Which of the following statements about elliptical galaxies is/are correct?

• They are oval or football shaped.

• They mostly contain old stars.

• They usually have lots of gas and dust.

• They have no definite shape.

Multiple Choice

Which of the following best describes the main difference between irregular galaxies and spiral galaxies?

• Irregular galaxies have no defined shape, while spiral galaxies have a pinwheel shape with spiral arms.

• Irregular galaxies are always larger than spiral galaxies.

• Spiral galaxies contain only older stars, while irregular galaxies contain only younger stars.

• Irregular galaxies have a central bulge, while spiral galaxies do not.

Multiple Select

Which features are commonly found in spiral galaxies?

• Flat disk

• Spiral arms

• Central bulge

• Irregular shape

Multiple Choice

Which of the following statements about the arms of spiral galaxies is correct?

• They contain mostly younger stars and lots of gas and dust.

• They contain only older stars and no gas or dust.

• They are absent in all spiral galaxies.

• They are the hottest part of the galaxy.

Multiple Choice

Which part of the Milky Way galaxy is the Sun located in?

• Central bulge

• Outer arm

• Core

• Halo