Describe the evidence that best supports the Milankovitch hypothesis
What will be an ideal response?
Cores of seafloor sediment, which geologists use to date the layers of the samples and determine the temperature of the oceans when the sediment was deposited. From this, scientists constructed a history of ocean temperatures that matched the predictions of the Milankovitch hypothesis.
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For the multiplication of 6.3 m divided by 2.8 m, the result should be reported with how many significant figures?
a. Two b. One c. Three d. Four e. Seven
What do astronomers mean when they say the universe is expanding?
A) Everything in the universe is gradually growing in size. B) Average distances are increasing between most galaxies. C) Average distances are increasing between most stars. D) The universe is expanding from a single point.
What is the proper banking angle for an Olympic bobsled to negotiate a 100-m radius turn at 35 m/s without skidding?
A) 31° B) 41° C) 51° D) 61°
Light of wavelength 550 nm in air is found to travel at 1.96 × 108 m/s in a certain liquid. (c = 3.0 × 108 m/s) (a) What is the index of refraction of this liquid? (b) What is the frequency of the light in air?
What will be an ideal response?