The Fundamentals of Astronomy:
Comprehensive Exam Prep Guide for
Academic Excellence with Expert Answer
Analysis
Select the correct answer from each drop-down menu.
The distance between Earth and Mars is 225 million km. When converted using the
conversion factor 1 AU = 1.5 × 108 km, the distance between the planets is [0.2 AU/1.5
AU/2.0 AU]. The astronomical unit (AU) is [shorter than/longer than/the same as] a light-
year. - CORRECT ANS- -1.5 AU
SHORTER THAN
Drag each tile to the correct location.
A scientist is studying the light emitted by several celestial objects. He records the shifts in
each object's spectral lines (in nm). Based on these measurements, determine whether
each object is moving TOWARD or AWAY from Earth.
Use the LINK for the diagram of the visible light spectrum to help you.
400 nm shifted to 430 nm
610 nm shifted to 580 nm
512 nm shifted to 480 nm
670 nm shifted to 690 nm
https://cdn.app.edmentum.com/EdAssets/b9d99084338a4dbf9c9ed79f1049bf8c?ts=636
232334357600000 - CORRECT ANS- -TOWARD:610 nm shifted to 580 nm AND 512 nm
shifted to 480 nm
,AWAY:400 nm shifted to 430 nm AND 670 nm shifted to 690 nm
Match the tools with the advantages they offer to astronomers.
photography
space telescope
radio telescope
optical telescope
detects electromagnetic frequencies outside the visible spectrum that reaches Earth
captures images that can be shared and compared by scientists
obtains a magnified and clear view of a part of the sky to observe celestial objects
allows access to images taken from outsideEarth's atmosphere - CORRECT ANS- -SPACE
TELESCOPE:allows access to images taken from outsideEarth's atmosphere
PHOTOGRAPHY:captures images that can be shared and compared by scientists
OPTICAL TELESCOPE:obtains a magnified and clear view of a part of the sky to observe
celestial objects
RADIO TELESCOPE:detects electromagnetic frequencies outside the visible spectrum that
reaches Earth
Arrange the events of the big bang in sequential order.
The first neutral atoms form. The universe is transparent.
Atomic nuclei form. Hydrogen fuses into helium.
The universe comes into existence as a single point.
, Gases form that will later go on to shape the stars and galaxies.
The universe begins expanding, and nuclear forces develop. - CORRECT ANS- -The universe
comes into existence as a single point. --> The universe begins expanding, and nuclear
forces develop. -->Atomic nuclei form. Hydrogen fuses into helium. --> The first neutral
atoms form. The universe is transparent. --> Gases form that will later go on to shape the
stars and galaxies.
Match the events related to the formation of the universe with the stages during which they
occurred.
Expansion from an infinitely hot point. - CORRECT ANS- -(left to right on picture)
Expansion from an infinitely hot point.
Hydrogen fuses into helium.
The first neutral atoms begin to form.
Which occurrence would contradict the big bang theory?
A. The percentage of carbon dioxide in Earth's atmosphere increases.
B. Scientists discover that 99% of the universe's mass is hydrogen.
C. A radio telescope detects microwave radiation in space.
D. Distant galaxies move progressively farther away from Earth. - CORRECT ANS- -B.
Scientists discover that 99% of the universe's mass is hydrogen.
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