Download REVIEW: STAR`S TEST

REVIEW: STAR’S TEST 2016
What force causes particles of stellar dust to become attracted to each other ? _____________________
The most widely held astronomical theory about the origin of the universe is the
theory.
The fact that the spectra of stars are shifted towards the red suggests that the stars are moving _____
Diagram the correct sequence of a star’s life cycle.
Write the formula for a fusion reaction.
What do each of the letters stand for in the formula E=mc2 .
Explain how the e and m are related. A small amount of _____________ can become a huge amount of ____________
What is the speed of light ?
List the visible light from longest to shortest wavelengths.
What happens to white light as it passes through a prism ?
Which color refracts the most and least ?
What is thought to be at the center of all galaxies ? _______________________
What is the name of our galaxy ? ____________________________________
Approximately 90% of the visible universe’s mass is composed of _____________________
In the H-R diagram, stars are classified on the basis of
__________
and __________________________
A cloud of gas and dust in which a star is born is called a _____________________________
On the H-R Diagram which group do most stars fall? __________________________________________
The actual brightness of a star is its
_________________
magnitude.
How bright a star looks from Earth is called ________________________ magnitude.
Blue stars are
than red stars.
What factor determines a star’s color ? _____________________________________
The apparent magnitude of a star tells you how bright the star is as viewed from
A nebula is a huge cloud of gas, primarily composed of
.
A nebula becomes a star when ____________________________________
Our sun is what color ? ________________________________________
.
Using the H-R Diagram below, answer the following questions:
White dwarfs have
Supergiants have
temperature and
absolute magnitudes
temperature and
A star with an absolute magnitude of -6 is
absolute magnitudes
____________
than a star with an absolute magnitude of +2.
Answer the next questions using the following charts:
What is the apparent magnitude of the sun ? ______________________________
What is the apparent magnitude of Jupiter ? ________________________________
How much brighter is the sun than Jupiter ? ___________________________
Can a 15 cm telescope see an object with an apparent magnitude of 18.5 ? ______________________________
The top of the diagram shown below shows the spectrum of 4 elements. Use this diagram to determine which
elements are in the star shown in the bottom of the diagram diagram.
What looks like a potato, orbits the sun between Mars and Jupiter, and is made of rock ? _________________________
A rock that hits the Earth’s surface is called a _______________________.
A rock that is flying through space is called a _____________________________.
A rock that burns up in our atmosphere is also known as “shooting star” _______________________.
A _________________________ grows a coma and tail as it nears the sun. It orbits the sun.
The element that is found in space rocks that is not common on Earth ____________________________.