Download Modified True/False - Indicate whether the statement is true or false

Unit 1 CP Study Guide The Universe and its Stars
Modified True/False - Indicate whether the statement is true or false. If false, change the identified word or
phrase to make the statement true.
____
____
____
____
____
____
1.
2.
3.
4.
HS-ESS1-1 When hydrogen nuclei fuse, they produce helium.
HS-ESS1-1 A cloud of dust and gas in which a star forms is called a nebula.
HS-ESS1-1 As white dwarfs cool, they often explode as supernovas.
HS-ESS1-1 Combining of lightweight nuclei into heavier nuclei, such as four hydrogen nuclei
combining to form a helium nucleus is called fission.
5. HS-ESS1-2 A parsec is a greater distance than a light year.
6. HS-ESS1-2 A light-year is the distance that light travels in one year.
Multiple Choice - Identify the choice that best completes the statement or answers the question.
____
7. HS-ESS1-1 Which stage in stellar evolution is the longest?
a. Black hole
c. Supergiant
b. Neutron star
d. Main-sequence
____
8. HS-ESS1-1 In the last stage of stellar evolution following a supernova, stars too massive to form
neutron stars may form a
a. Red supergiant.
c. White dwarf.
b. Black dwarf.
d. Black hole.
____
9. HS-ESS1-1 A main-sequence star maintains a stable size as long as it has an ample supply of
hydrogen to fuse into
a. Iron.
c. Protactinium.
b. Magnesium.
d. Helium.
____ 10. HS-ESS1-2 The apparent magnitude of a star is a measure of its
a. Brightness as it appears from the earth.
b. Distance from the earth.
c. Surface temperature and composition.
d. Position on the H-R diagram.
____ 11. HS-ESS1-2 How far is the sun from the earth?
a. 4.3 light-minutes
c. 8.3 light-minutes
b. 9 light-years
d. 680 light-years
____ 12. HS-ESS1-1 The process in which small atomic nuclei are combined into larger ones is known as
a. Parallax
c. Synthesis
b. Fusion
d. Fission
____ 13. HS-ESS1-2 Section of the H-R diagram into which about 90 percent of stars fall
a. Main Sequence
c. Supergiants
b. Dwarfs
d. Giants
Unit 1 CP Study Guide The Universe and its Stars
____ 14. HS-ESS1-1 What stage in the life of a star 10 times more massive than the sun is missing in this
chart?
a. Supernova
c. Black hole
b. Red giant
d. Neutron star
____ 15. HS-ESS1-1 When a white dwarf star no longer emits energy, it may become a
a. Black hole.
c. Neutron star.
b. Nova.
d. Black dwarf.
____ 16. HS-ESS1-1 The process in which smaller atomic nuclei combine into larger atomic nuclei is known
as
a. Gravitational attraction.
c. The Doppler effect.
b. Parallax.
d. Nuclear fusion.
____ 17. HS-ESS1-2 The apparent shift in a star’s position caused by the motion of the observer is called
____.
a. Luminosity
c. Apparent magnitude
b. Absolute magnitude
d. Parallax
____ 18. HS-ESS1-1 Small, massive, dense object that has gravity so immense that nothing—not even light—
can escape it
a. Black dwarf
c. Black hole
b. Black hole Black hole
d. Giant
____ 19. HS-ESS1-2 A star that is gravitationally bound to another star can either be part of a star cluster or a
____.
a. Constellation
c. White dwarf
b. Binary star
d. Red giant
____ 20. HS-ESS1-1 What stage of stellar evolution is the sun experiencing at this time?
a. Main-sequence
c. Protostar
b. White dwarf
d. Giant
Unit 1 CP Study Guide The Universe and its Stars
____ 21. HS-ESS1-1 Which of the following stages is the earliest in the development of a star?
a. Nebula
c. Neutron star
b. Protostar
d. Giant
____ 22. HS-ESS1-1 All stars, including the Sun, have the following identical composition:
a. 73 percent hydrogen; 25 percent helium; and 2 percent oxygen
b. 73 percent hydrogen; 25 percent helium; and 2 percent other elements
c. 25 percent hydrogen; 73 percent helium; and 2 percent oxygen
d. 25 percent hydrogen; 73 percent helium; and 2 percent other elements
____ 23. HS-ESS1-2 The ____ of a star determines its temperature, luminosity, and diameter.
a. Composition
c. Energy output
b. Mass
d. Density
____ 24. HS-ESS1-1 Cloud of interstellar gas and dust that collapses on itself to form a new star _____.
a. Giant
c. Protostar
b. Supernova
d. Nebula
____ 25. HS-ESS1-2 The distance between a star and the earth is measured in ______
a. Parsecs
c. Quantum leaps
b. Light-years
d. Millenniums
____ 26. HS-ESS1-1 An explosion 100 times brighter than a nova is called a (n)
a. Main Sequence
c. Protostar
b. Supernova
d. Nebula
ESSAY. Write your answer in the space provided or on a separate sheet of paper.
Critical Thinking and Discussion. Use complete sentences, correct spelling, and the information presented
in Chapter 24 to answer the questions below.
37) How do we calculate or determine the distances to stars? What units do we use and what are the limitations (if any) of the method used for such calculations?
38) Label the Giant and Supergiant stars, the Main Sequence stars, and the White dwarf stars on the H-R diagram below.
Unit 1 CP Study Guide The Universe and its Stars
39) Briefly explain the sequence of events that are illustrated in Figure 24.11 below.
Unit 1 CP Study Guide The Universe and its Stars
Answer Section
MODIFIED TRUE/FALSE
1. ANS: T
2. ANS: T
3. ANS: F, black dwarfs or dead stars
4. ANS: F, fusion
5. ANS: T
6. ANS: T
MULTIPLE CHOICE
7. ANS: D
PTS: 1
8. ANS: D
PTS: 1
9. ANS: D
PTS: 1
10. ANS: A
PTS: 1
11. ANS: C
PTS: 1
12. ANS: B
PTS: 1
13. ANS: A
PTS: 1
14. ANS: B
PTS: 1
15. ANS: D
PTS: 1
16. ANS: D
PTS: 1
17. ANS: D
PTS: 1
18. ANS: C
PTS: 1
19. ANS: B
PTS: 1
20. ANS: A
PTS: 1
21. ANS: A
PTS: 1
22. ANS: B
PTS: 1
23. ANS: D
PTS: 1
24. ANS: C
PTS: 1
25. ANS: A
PTS: 1
26. ANS: B
PTS: 1
PTS: 1
PTS: 1
PTS: 1
PTS: 1
NAT: UCP1 | A1 | D4
NAT: UCP3 | A1 | D4
NAT: UCP2 | A1 | D4
NAT: UCP1 | A1 | E1