Which of the following properties are true for freshwater? Select one: a. It exi

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Which of the following properties are true for freshwater?

Select one:

a. It exists in all states of matter on the Earth’s surface

b. It has a high heat capacity

c. It is most dense at 4 °C

d. All of the above

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Which statements specifically apply to the continental drift hypothesis proposed by Wegener?

Select one:

a. It was initially rejected by scientists

b. It successfully explained what causes continents to move

c. It was based on the discovery of mid-ocean ridges

d. All of the above

Question 42

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The winds over the most of the United States are part of the:

Select one:

a. westerlies

b. Intertropical Convergence Zone

c. Hadley Cell

d. trade winds

Question 43

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Which direction do tropical cyclones rotate in the Northern Hemisphere?

Select one:

a. Clockwise

b. North to South

c. South to North

d. Counterclockwise

Question 44

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The calcium carbonate in the White Cliffs of Dover is formed from:

Select one:

a. ancient sand dunes

b. river-transported sediment

c. evaporite deposits

d. microscopic phytoplankton

Question 45

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Typically, ocean crust gets no older than      before it gets subducted.

Select one:

a. 6000 years old

b. 10 million years old

c. 200 million years old

d. 1 billion years old

e. 4 billion years old

Question 46

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In the map of the Caribbean above, arrows indicate the directions of plate motion. The location marked “1” on the map is what kind of plate boundary?

Select one:

a. Convergent

b. Divergent

c. Transform

d. Rift valley

Question 47

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Rainy climates are most likely to be found near:

Select one:

a. in the center of gyres

b. 30N and 30S

c. warm, rising air

d. cold, sinking air

e. warm, sinking air

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If a mid-ocean ridge is spreading at a rate of 5 cm/yr, how much will the distance increase between features on opposite sides of the ridge after 1 million years?

NOTE: Pay attention to the UNITS of each answer.

Select one:

a. 50 km

b. 5 km

c. 50 m

d. 5 m

e. 500 km

Question 49

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Which of the following statements about the scientific method is true?

Select one:

a. Many scientists must test a hypothesis before it becomes a theory.

b. A theory can still be proven wrong.

c. All science is fundamentally based on observations of the world/universe.

d. A scientific hypothesis must make a testable prediction.

e. All of the above

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Uranium 238 has a half-life of 4.5 billion years. You begin with 600 grams. After three half-lives, how much radioactive material remains?

Select one:

a. 75 g

b. 200 g

c. 37.5 g

d. 150 g

Explanation / Answer

-; All the properties which is given for freshwater condition are true. Freshwater exists in all states of matter on the Earth’s surface. It also has a high heat capacity and It is most dense at 4 °C.

-; The continental drift hypothesis proposed by Wegener. This continental drift theory first rejected by scientists. It supported in 1950 and 1960 when geomagnetic evidences were discovered in its favour. It also successfully explained what causes continents to move. It also was based on the discovery of mid-ocean ridges. Based on this theory begining of the Mesozoic era all continents unite together, and it start breaking in 200 million year ago.

-; The winds over the most of the United States are part of the Trade wind.

-; Counterclockwise direction do tropical cyclones rotate in the Northern Hemisphere because of Coriolis effects.

-; The calcium carbonate in the White Cliffs of Dover is formed from microscopic phyloplankton.

-; The most pirimitive oceanic crust discovered is 200 million year old(approx 260 my old).

-; Give the proper map

-; Rainy climates are most likely to be found near Warm, rising air.

-; 50 km is the right answer

-;  A scientific hypothesis must make a testable prediction is true about the scientific method.

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