NJIT Phys202 exam 2 UPDATED Actual
Exam Questions and CORRECT Answers
eight planets - CORRECT ANSWER✔✔- Mercury, Venus, Earth, Mars, Jupiter, Saturn,
Uranus, and Neptune
inner planets - CORRECT ANSWER✔✔- Mercury, Venus, Earth, and Mars
outer planets - CORRECT ANSWER✔✔- Jupiter, Saturn, Uranus, and Neptune
inner planets characteristics - CORRECT ANSWER✔✔- small, dense, made of primarily
metal and rock
outer planets characteristics - CORRECT ANSWER✔✔- large, tenuous, made of primarily
hydrogen and helium gas
how many moons on inner planets? - CORRECT ANSWER✔✔- no moons or perhaps few
moons
how many moons on outer planets? - CORRECT ANSWER✔✔- many moons
Do inner planets have rings? - CORRECT ANSWER✔✔- no
Do outer planets have rings? - CORRECT ANSWER✔✔- yes
inner planet rotation - CORRECT ANSWER✔✔- slow
outer planet rotation - CORRECT ANSWER✔✔- fast
The inner planets are known as - CORRECT ANSWER✔✔- terrestrial planets
,terrestrial means - CORRECT ANSWER✔✔- Earth-like
The outer planets are known as - CORRECT ANSWER✔✔- jovian/gas-giant planets
jovian means - CORRECT ANSWER✔✔- Jupiter-like
All eight planets orbit the Sun in nearly - CORRECT ANSWER✔✔- the ecliptic plane
entire Solar System is very - CORRECT ANSWER✔✔- flat
All eight planets orbit the Sun in the same direction which is - CORRECT ANSWER✔✔-
counterclockwise
Do moons orbit the same direction as planets? - CORRECT ANSWER✔✔- yes
(counterclockwise)
Which way does the sun orbit? - CORRECT ANSWER✔✔- counterclockwise
entire Solar System was born - CORRECT ANSWER✔✔- roughly 4.5 billion years ago
from a nebula
nebula - CORRECT ANSWER✔✔- giant cloud of gas composed of mostly hydrogen and
helium. some parts more dense , other parts less dense, tiny part of a nebula, may become
dense enough that gravity dominates thus collapses toward center forming sun, rest into a flat
rotating disk
The law of conservation of energy and the law of conservation of angular momentum
together cause - CORRECT ANSWER✔✔- gravitationally-collapsing material to flatten into
a disk perpendicular to the angular momentum axis
Since the inner part of the protoplanetary disk was warmer only materials with - CORRECT
ANSWER✔✔- hotter melting temperatures were able to condense ie. metal & rock
,Since the outer part of the protoplanetary disk was cooler - CORRECT ANSWER✔✔-
greater abundance of materials in addition to metal and rock was able to condense
condensing objects orbiting the Sun are not yet planets. They are - CORRECT
ANSWER✔✔- planetesimals, the technical word for baby planets
how did planetesimals grow? - CORRECT ANSWER✔✔- they grew larger through
accretion, the gaining of mass through sticky collisions until the planetesimals became so
large that their own self-gravity became strong enough to force themselves into spherical
shapes thus becoming planets
Sun is named for - CORRECT ANSWER✔✔- Sol, the ancient Roman god of the Sun Helios
Mercury is named for - CORRECT ANSWER✔✔- Roman god of messengers Hermes
Venus is named for - CORRECT ANSWER✔✔- Roman goddess of love Aphrodite
Earth is named for - CORRECT ANSWER✔✔- Terra the ancient Roman goddess of the
Earth Gaia in greek
Earth's Moon is named for - CORRECT ANSWER✔✔- Luna, the ancient Roman goddess of
the Moon Selene in greek
Mars is named for - CORRECT ANSWER✔✔- ancient Roman god of war Ares
Name of Mars moons - CORRECT ANSWER✔✔- Phobos and Deimos
Phobos was the god of - CORRECT ANSWER✔✔- fear
Deimos was the god of - CORRECT ANSWER✔✔- panic
, Jupiter is named for - CORRECT ANSWER✔✔- Roman king of the gods Zeus
Saturn is named after - CORRECT ANSWER✔✔- youngest of the ancient Roman titans
Kronos
titan Saturn (Kronos) was the father of - CORRECT ANSWER✔✔- god Jupiter (Zeus)
Uranus and Neptune were not discovered until - CORRECT ANSWER✔✔- telescope was
invented
Uranus is named after - CORRECT ANSWER✔✔- Greek god of the sky Caelus the father of
the titans
Neptune is named after - CORRECT ANSWER✔✔- Roman god of the sea Poseidon
largest moon of planet Neptune is - CORRECT ANSWER✔✔- Triton, named after the
mythological son of Neptune
celestial body Pluto is named after - CORRECT ANSWER✔✔- Roman god of the
underworld Hades
largest moon of Pluto is - CORRECT ANSWER✔✔- Charon, named after the boatman of
the mythological river Styx who ferried souls to the underworld
most dense layer of the Earth is - CORRECT ANSWER✔✔- core which is the most dense
earths core composed of - CORRECT ANSWER✔✔- metal such as iron and nickel
2nd layer of earth - CORRECT ANSWER✔✔- mantle which is less dense than the core
mantle is made of - CORRECT ANSWER✔✔- iron-rich silicate rock
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
