POST EXAM PRACTICE TEST #2
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. - ✔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 - ✔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 - ✔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.
, POST EXAM PRACTICE TEST #2
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. - ✔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.
https://us-static.z-dn.net/files/d0d/6f1038f1dcdc9d87024509c434adc46b.png
The first neutral atoms begin to form.
Hydrogen fuses into helium.
Expansion from an infinitely hot point. - ✔(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. - ✔B. Scientists
discover that 99% of the universe's mass is hydrogen.
Which observational tool helped astronomers Arno Penzias and Robert Wilson discover
the existence of the cosmic microwave background (CMB)?
A. optical telescope
B. radio telescope
C. a digital camera
D. space telescope - ✔B. radio telescope
Which occurrence would contradict the big bang theory?
A. Over time, distant galaxies move progressively closer to Earth.
B. A scientist discovers a black hole outside the Milky Way galaxy.
C. The average temperature of the universe decreases.
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. - ✔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 - ✔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 - ✔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.
, POST EXAM PRACTICE TEST #2
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. - ✔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.
https://us-static.z-dn.net/files/d0d/6f1038f1dcdc9d87024509c434adc46b.png
The first neutral atoms begin to form.
Hydrogen fuses into helium.
Expansion from an infinitely hot point. - ✔(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. - ✔B. Scientists
discover that 99% of the universe's mass is hydrogen.
Which observational tool helped astronomers Arno Penzias and Robert Wilson discover
the existence of the cosmic microwave background (CMB)?
A. optical telescope
B. radio telescope
C. a digital camera
D. space telescope - ✔B. radio telescope
Which occurrence would contradict the big bang theory?
A. Over time, distant galaxies move progressively closer to Earth.
B. A scientist discovers a black hole outside the Milky Way galaxy.
C. The average temperature of the universe decreases.
