Can you Identify Grain and Extent?

Quiz

Question

What image depicts the finest grain size?

A

B

C

Looks Good!

Question

What image depicts the largest extent?

A

B

C

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Question

What is the spatial and temporal extent depicted in this figure from NASA?

spatial extent is global, temporal extent is global since the beginning of time

spatial extent is global, temporal extent is from 1880-2010

spatial extent is local, temporal extent is from 1880-2010

spatial extent is local, temporal extent is global since the beginning of time

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Question

What is the broadest temporal extent depicted in the Figure below?

centuries: 0-50

years: 0-2

days: 0-2

Mg ha^-1

g m^-1

mg cm^-1

not enough information provided

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Question

Fine-scale events can become broad-scale events when which of the following occurs?

They occur randomly

Incorrect, events (e.g., births vs. deaths) that occur randomly at fine scales result in relatively stable conditions at broader scales.

They occur at the same time over a broad extent

Correct, when local events occur synchronously over a large extent they emerge at broader scales.

They occur infrequently

Incorrect, events that are infrequent are unlikely to emerge at broad scales.

They occur quickly

Incorrect, fine-scale events that occur slowly can also emerge at broad scales over time.

Looks Good! Correct, when local events occur synchronously over a large extent they emerge at broader scales.

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