What Happens When a Glacier Encounters the Sea or a Lake

question 46

Multiple Choice

What happens when a glacier encounters the sea or a lake?

• A) the ice is more dense than water and so scrapes along the bottom
• B) white icebergs float but blue icebergs sink to the bottom
• C) large blocks of ice collapse off the front of the glacier and become icebergs
• D) rocks released from melted icebergs float on the water surface
• E) all of these

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Definitions:

Variable-ratio Schedule

A reinforcement schedule in operant conditioning where a response is rewarded after an unpredictable number of responses, which tends to produce high and steady rates of response.

Continuous Reinforcement

A method of learning where every correct response is reinforced every time, leading to faster acquisition of behavior but quicker extinction once reinforcement stops.

Partial Reinforcement

A conditioning schedule where only some responses are reinforced, leading to more resistant behaviors to extinction.

Delayed Reinforcer

A reward that does not immediately follow an action but is delayed for a certain time.