OCN Exam 1 with all Correct & 100% Verified Answers |
Actual Complete Exam |Already Graded A+
Science is a powerful way to find out about the natural world, but it has its limitations.
✔Correct Answer-T
Latitude can be told from the declination of the Pole Star, whereas longitude requires an
accurate clock. ✔Correct Answer-T
Current scientific theories suggest that the universe is 10-15 billion years old ✔Correct
Answer-T
Refractory elements are those that tend to form gases, even at relatively low temperature
✔Correct Answer-F
The four inner planets are relatively richer in volatile elements and compounds than are the
four outer gas-giant planets. ✔Correct Answer-F
Oceans of liquid water are common in our Solar System. ✔Correct Answer-F
An hypsometric curve shows two levels on Venus and only one on Earth. ✔Correct Answer-F
The atmospheres of Earth and its nearest neighbors, Venus and Mars, are similar. ✔Correct
Answer-F
Earth is believed to have originated by accretion from planetesimals. ✔Correct Answer-T
The age of the Earth is indistinguishable from that of the Moon and meteorites: about 4.5
billion years. ✔Correct Answer-T
Seismic S-waves do not travel through liquids and this indicates that at least part of the Earth's
core is molten. ✔Correct Answer-T
Earth is not massive enough to retain all of its constituent chemical elements. ✔Correct
Answer-T
Free oxygen has always been an important component of the Earth's atmosphere. ✔Correct
Answer-T
The oldest rocks from the seafloor are much younger than the oldest rocks from the continents.
✔Correct Answer-T
,The amount of land exposed above sea level has remained about the same for the last 600
million years. ✔Correct Answer-F
The oceanic crust is much thicker than the continental crust ✔Correct Answer-F
The Hawaiian Islands are an example of island arc volcanism. ✔Correct Answer-T
Worldwide, sea level is falling today ✔Correct Answer-F
The deep sea is a promising place to explore for oil and gas ✔Correct Answer-T
Seawalls are usually effective in preventing beach erosion ✔Correct Answer-F
Earth contains elements that were formed in a supernova explosion ✔Correct Answer-T
The Earth is believed to have originated by accretion from planetesimals and planetary embryos
✔Correct Answer-T
Venus has a similar outgassing history to Earth, and similar surface conditions ✔Correct
Answer-F
The Earth is about 4.5 million years old ✔Correct Answer-T
Continental crust is too buoyant to be subducted ✔Correct Answer-T
The depth of the seafloor is linearly related to the square root of its age out to about 80 million
years ✔Correct Answer-T
Hotspots can occur both at plate boundaries and in the middle of plates, and both in the oceans
and on the continents. ✔Correct Answer-T
On the island of Oahu, sea level is falling at present ✔Correct Answer-F
The Pacific Ocean has the highest rate of input of terrigenous sediment of any of today's oceans
✔Correct Answer-F
Beaches are normally very stable in shape and width unless disturbed by human activities
✔Correct Answer-F
Earth's crust originated by solidification of molten rock that rose up from the mantle.
✔Correct Answer-T
Because seismic s-waves do not travel through liquids, the s-wave shadow zone indicates that at
least part of the Earth's core is molten ✔Correct Answer-T
, Sea level changes have been modest throughout Earth's history, never exceeding more than
about 10 m up or down ✔Correct Answer-F
The Hawaiian Islands have formed along an active plate boundary ✔Correct Answer-F
An informal rule in science is that extraordinary hypotheses require extraordinary evidence
✔Correct Answer-T
In science complex theories are preferred over simple ones. ✔Correct Answer-F
The continental crust is much thicker than the oceanic crust. ✔Correct Answer-T
The crust is the same as the lithosphere ✔Correct Answer-F
Earthquakes can only occur in the asthenosphere ✔Correct Answer-F
The lithosphere is rigid and brittle, whereas the asthenosphere is plastic and ductile ✔Correct
Answer-T
The Earth's mantle is entirely molten. ✔Correct Answer-F
Atolls originate as fringing reefs on volcanoes that eventually subside below sea level
✔Correct Answer-T
Sand that lies on the beach in the summer (in most places) is often stored in an offshore bar
during winter. ✔Correct Answer-T
1. Which of the following is true about the scientific method?
a) The scientific method is a systematic way of asking and answering questions about the
natural world.
b) In science, simple theories are preferred over complex ones.
c) Scientific theories are always subject to challenge and may be overturned.
d) Scientific theories are continuously updated as new information becomes available.
e) All of the above. ✔Correct Answer-E
2. Which of the following statements most accurately reflects current scientific thinking?
a) The size of the universe is static; it has always been and will always remain so.
b) The Universe is expanding but will eventually reverse and begin to contract.
c) The Universe is contracting and will end in the Big Crunch.
d) The Universe is expanding and will end in the Big Chill.
e) None of the above. ✔Correct Answer-B
3. The Sun's energy comes from
Actual Complete Exam |Already Graded A+
Science is a powerful way to find out about the natural world, but it has its limitations.
✔Correct Answer-T
Latitude can be told from the declination of the Pole Star, whereas longitude requires an
accurate clock. ✔Correct Answer-T
Current scientific theories suggest that the universe is 10-15 billion years old ✔Correct
Answer-T
Refractory elements are those that tend to form gases, even at relatively low temperature
✔Correct Answer-F
The four inner planets are relatively richer in volatile elements and compounds than are the
four outer gas-giant planets. ✔Correct Answer-F
Oceans of liquid water are common in our Solar System. ✔Correct Answer-F
An hypsometric curve shows two levels on Venus and only one on Earth. ✔Correct Answer-F
The atmospheres of Earth and its nearest neighbors, Venus and Mars, are similar. ✔Correct
Answer-F
Earth is believed to have originated by accretion from planetesimals. ✔Correct Answer-T
The age of the Earth is indistinguishable from that of the Moon and meteorites: about 4.5
billion years. ✔Correct Answer-T
Seismic S-waves do not travel through liquids and this indicates that at least part of the Earth's
core is molten. ✔Correct Answer-T
Earth is not massive enough to retain all of its constituent chemical elements. ✔Correct
Answer-T
Free oxygen has always been an important component of the Earth's atmosphere. ✔Correct
Answer-T
The oldest rocks from the seafloor are much younger than the oldest rocks from the continents.
✔Correct Answer-T
,The amount of land exposed above sea level has remained about the same for the last 600
million years. ✔Correct Answer-F
The oceanic crust is much thicker than the continental crust ✔Correct Answer-F
The Hawaiian Islands are an example of island arc volcanism. ✔Correct Answer-T
Worldwide, sea level is falling today ✔Correct Answer-F
The deep sea is a promising place to explore for oil and gas ✔Correct Answer-T
Seawalls are usually effective in preventing beach erosion ✔Correct Answer-F
Earth contains elements that were formed in a supernova explosion ✔Correct Answer-T
The Earth is believed to have originated by accretion from planetesimals and planetary embryos
✔Correct Answer-T
Venus has a similar outgassing history to Earth, and similar surface conditions ✔Correct
Answer-F
The Earth is about 4.5 million years old ✔Correct Answer-T
Continental crust is too buoyant to be subducted ✔Correct Answer-T
The depth of the seafloor is linearly related to the square root of its age out to about 80 million
years ✔Correct Answer-T
Hotspots can occur both at plate boundaries and in the middle of plates, and both in the oceans
and on the continents. ✔Correct Answer-T
On the island of Oahu, sea level is falling at present ✔Correct Answer-F
The Pacific Ocean has the highest rate of input of terrigenous sediment of any of today's oceans
✔Correct Answer-F
Beaches are normally very stable in shape and width unless disturbed by human activities
✔Correct Answer-F
Earth's crust originated by solidification of molten rock that rose up from the mantle.
✔Correct Answer-T
Because seismic s-waves do not travel through liquids, the s-wave shadow zone indicates that at
least part of the Earth's core is molten ✔Correct Answer-T
, Sea level changes have been modest throughout Earth's history, never exceeding more than
about 10 m up or down ✔Correct Answer-F
The Hawaiian Islands have formed along an active plate boundary ✔Correct Answer-F
An informal rule in science is that extraordinary hypotheses require extraordinary evidence
✔Correct Answer-T
In science complex theories are preferred over simple ones. ✔Correct Answer-F
The continental crust is much thicker than the oceanic crust. ✔Correct Answer-T
The crust is the same as the lithosphere ✔Correct Answer-F
Earthquakes can only occur in the asthenosphere ✔Correct Answer-F
The lithosphere is rigid and brittle, whereas the asthenosphere is plastic and ductile ✔Correct
Answer-T
The Earth's mantle is entirely molten. ✔Correct Answer-F
Atolls originate as fringing reefs on volcanoes that eventually subside below sea level
✔Correct Answer-T
Sand that lies on the beach in the summer (in most places) is often stored in an offshore bar
during winter. ✔Correct Answer-T
1. Which of the following is true about the scientific method?
a) The scientific method is a systematic way of asking and answering questions about the
natural world.
b) In science, simple theories are preferred over complex ones.
c) Scientific theories are always subject to challenge and may be overturned.
d) Scientific theories are continuously updated as new information becomes available.
e) All of the above. ✔Correct Answer-E
2. Which of the following statements most accurately reflects current scientific thinking?
a) The size of the universe is static; it has always been and will always remain so.
b) The Universe is expanding but will eventually reverse and begin to contract.
c) The Universe is contracting and will end in the Big Crunch.
d) The Universe is expanding and will end in the Big Chill.
e) None of the above. ✔Correct Answer-B
3. The Sun's energy comes from
