1- The polar ice caps on Mars are an example of what type of glacier? Select one

Question

1-

The polar ice caps on Mars are an example of what type of glacier?

Select one:

a. piedmont glaciers

b. valley glaciers

c. continental glaciers

d. cirque glaciers

2-

When an unstable parent isotope decays, which of these is true?

Select one:

a. The daughter isotope may continue to decay.

b. The parent isotope's rate of decay slows.

c. The parent isotope becomes stable and stops decaying.

d. The daughter isotope will be a stable isotope.

3- Some limestone is formed by the lithification of the accumulated calcite shells of marine organisms.

True or False?

Explanation / Answer

Question 2) answer ) option a)

Reason : According to Nuclear theory ,when a parent undergoes decay and produces a daughter isotope then the daughter may be stable or it may be unstable and further decay until a final stable grand daughter isotope is formed

Question 1) option c) continental glaciers

Reason : Continental glaciers are continuous masses of ice that are much larger than other glaciers . Continental glaciers cover large swaths of land and extend over 50,000 km

Since polar ice caps on Mars cover large area . They are example of continental glacier

Question 3) true

Reason : chalk is a type of limestone formed by the accumulation of calcareous shells of microscopic marine organisms.

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