Question 1. Question :

Which of the following affects the life of a star?

gravitational force



fusion processes

all of these are correct

Points Received: 1 of 1

Question 2. Question :

If you were to observe a pulsar, what would you see?

a blinking red glow

intermittent radio waves

a steady glow that oscillates among the stars

the sudden brightening of a star

the total eclipse of the Sun

Points Received: 1 of 1

Question 3. Question :

Mendeleev’s periodic table was organized according to rules of scientific method. Which statement below follows those rules?

The periodic table made predictions that could be tested.

Only scientists could understand the periodic table.

Information that refuted Mendeleev’s hypothesis was ignored.

Mendeleev’s listed the elements alphabetically.

The periodic table has not changed in 100 years.

Points Received: 1 of 1

Question 4. Question :

The difference in appearance of a star from other stars is a function of

the star’s gravitational force on the Earth.

how far away the star is from other stars.

the total energy emitted by the star.

the composition of the core of the star.

the star’s absolute brightness.

Points Received: 1 of 1

Question 5. Question :

An object in the universe that will not allow the escape of anything from its gravitational field is a

white dwarf

black hole


red dwarf

neutron star

Points Received: 1 of 1

Question 6. Question :

Which type of star is produced after a large star explodes in a supernova?

a red giant

a neutron star

a proton star

a red dwarf

a white dwarf

Points Received: 1 of 1

Question 7. Question :

The total collection of photons emitted by an atom is called its

electromagnetic image

periodic position


energy signature

stimulated emission

Points Received: 1 of 1

Question 8. Question :

Which region of the electromagnetic spectrum can easily reach a telescope on the earth’s surface?

radio waves




gamma rays

Points Received: 1 of 1

Question 9. Question :

The Hertzsprung-Russell diagram is a graphical technique used in astronomy to compare

the surface temperature versus the energy output of a star.

the star’s luminosity versus its distance from Earth.

the absolute magnitude of the star versus the star’s relative temperature.

the distance the Sun is from the nearest red giant.

the location of possible solar systems in the Milky Way.

Points Received: 1 of 1

Question 10. Question :

The dense, central portion of an atom is its






Points Received: 1 of 1

Question 11. Question :

A material that cannot be broken down any further without losing its chemical properties is

an ion

a molecule

an element

a photon

a laser

Points Received: 1 of 1

Question 12. Question :

The electrically neutral particle found in an atom is the





Points Received: 1 of 1

Question 13. Question :

An electrically charged atom is

a proton

an ion

an electron

a neutron

a molecule

Points Received: 1 of 1