IB Physics HL B 1 10 Thermal Transfer Mechanisms Questions

Practise HL thermal-transfer mechanisms through conduction, convection, radiation and energy-loss analysis in exam questions.

Exam points

Distinguish conduction, convection and thermal radiation as primary mechanisms of thermal-energy transfer.
Relate each mechanism to particle motion, bulk-fluid motion or electromagnetic emission and select the mechanism supported by complete evidence.

[Maximum number: 3]

The radioactive nuclide beryllium-10 (Be-10) undergoes beta minus ( $\beta$ -) decay to form a stable boron (B) nuclide.

(a)

An ice sample is moved to a laboratory for analysis. The temperature of the sample is $-20^{\circ} \mathrm{C}$ .

[ 3 ]

(i)

State what is meant by thermal radiation.

[ 1 ]

(ii)

The temperature in the laboratory is higher than the temperature of the ice sample. Describe one other energy transfer that occurs between the ice sample and the laboratory.

[ 2 ]

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IB Physics HL B 1 10 Thermal Transfer Mechanisms Questions question 1

Question (a)

Question (i)

Question (ii)