Chemistry, 31.03.2020 01:59 kingsavage2002
100 POINTS HELP AND IF YOU ANSWER AT LEAST 15
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Which sample of ocean water would be the most likely to have the highest salinity?
Question 1 options:
Ocean water taken from the surface of the ocean
Ocean water taken from the bottom of the ocean
The warmest sample of ocean water
The ocean water taken from an area near the polar ice caps
Question 2 (2 points)
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Which answer best explains one of the reasons that oceans are salty?
Question 2 options:
Water from streams and rivers carry salt to the ocean
Water is removed by deep ocean vents
Salt comes from small ocean organisms
The oceans have always been salty
Question 3 (4 points)
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Mark all the things that can impact the density of salt water
Question 3 options:
Depth
Temperature
Time
Salinity
Question 4 (2 points)
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You have two balls in a glass of liquid. Ball A sinks to the bottom. Ball B floats. Which ball is the densest?
Ball A is at the bottom of a glass of liquid. Ball B is floating on the top of the liquid.
Question 4 options:
You can not tell which ball is the densest with this information
B
A
A and B are the same density
Question 5 (2 points)
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Ocean water can impact local climates because it moves from one place to another place.
Question 5 options:
thermal energy
salt
potential energy
density
Question 6 (2 points)
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Ocean currents movement and direction of flow are influenced by
Question 6 options:
all of these are correct
the Coriolis effect
the size and shape of continents
prevailing winds
Question 7 (2 points)
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Which factor is the major cause of both prevailing global wind patterns and ocean currents?
Question 7 options:
The Great Ocean Conveyor Belt
The Earth has a North and South Pole
Ocean water has different densities
The sun’s heat is uneven on the Earth
Question 8 (2 points)
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What is the name for the prevailing global wind pattern that comes from the poles and blows from east to west?
Question 8 options:
Trade Winds
Doldrums
Prevailing Westerlies
Polar Easterlies
Question 9 (2 points)
Which two things drive the Global Ocean Conveyor Belt?
Question 9 options:
temperature and density
the moon and tides
salt and wind
the moon and gravity
Question 10 (2 points)
waves transfer
Question 10 options:
heat
matter
energy
density
Question 11 (2 points)
Ocean waves are caused by
Question 11 options:
density
thermal energy
wind
the moon
Question 12 (2 points)
The Earth is on the left, the moon is on the right. Going around Earth, A is at 9:00, B is at 12:00, C is at 3:00, D is at 6:00
Which points on the diagram would have high tides?
Question 12 options:
A and C
B and D
D and C
A and B
Question 13 (2 points)
Tides are mostly caused by
Question 13 options:
The force of the Moon’s gravity
Wind
The spinning of Earth
Ocean currents
Question 14 (2 points)
Which of the following is a benefit of tidal energy?
Question 14 options:
It can be installed along rivers
It is inexpensive to install
It is beneficial to wildlife
It is a renewable resource
Question 15 (2 points)
How much salt is found in freshwater?
Question 15 options:
Less than 1%
0%
Around 20%
Around 10%
Question 16 (2 points)
What is a watershed?
Question 16 options:
The area around a pond
An area of land where all the water drains into the same place.
The groundwater below a river
The area around a river
Question 17 (4 points)
Which of the following things threaten our fresh water supply? Check all that apply.
Question 17 options:
improper waste disposal
overuse
tidal power
fertilizer use
Question 18 (2 points)
True or false: Hydroelectric power causes no harm to ecosystems.
Question 18 options:
True
False
Question 19 (2 points)
Which of the following is a negative impact of hydroelectric power?
Question 19 options:
Hydroelectric changes ecosystems
Hydroelectric power releases carbon dioxide into the air
Hydroelectric power doesn’t produce electricity reliably
Hydroelectric power uses up water
Question 20 (2 points)
Tsunami waves are formed differently than traditional ocean waves.
Question 20 options:
True
False
Answers: 2
Chemistry, 22.06.2019 10:50
A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.
Answers: 3
Chemistry, 23.06.2019 13:30
What happens to acetone molecules when you add heat to a beaker of liquid acetone?
Answers: 1
Chemistry, 23.06.2019 14:00
Fill in the blanks for the following statements: the rms speed of the molecules in a sample of h2 gas at 300 k will be times larger than the rms speed of o2 molecules at the same temperature, and the ratio µrms (h2) / µrms (o2) with increasing temperature.
Answers: 1
100 POINTS HELP AND IF YOU ANSWER AT LEAST 15
Saved
Which sample of ocean wate...
Saved
Which sample of ocean wate...
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