What does 'whipped up' mean?

[rich7]

Test No. incompl/inter-31 "Life on Mars?", question 8

As the planet gets nearer to the Sun, enormous dust storms can be whipped ..........

(a) over
(b) on
(c) in
(d) up

Test No. incompl/inter-31 "Life on Mars?", answer 8

As the planet gets nearer to the Sun, enormous dust storms can be whipped up.

Correct answer: (d) up

Your answer was: correct
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whipped up on this case?

[Alan]

Meaning: created quickly/suddenly without warning
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English as a Second Language
You can read my ESL story Womens' Day