HEAT ENERGY Obj (Q1-10): Integrated Science Current WASSCE Questions

Integrated Science Current WASSCE Past Questions: HEAT ENERGY Objective Questions (2016-2019)

I) Questions that occur multiple times means they were repeated over the period under consideration

II) Candidates are expected to spend 50 seconds on each objective question. Candidates are therefore required to spend between 8-9minutes on these 10 questions. Start work now!!

1. During very hot weather, it is not advisable to wear dark coloured garments because they
A. Absorb the sun’s radiation making the inside hot
B. Reflect the sun’s radiation making the inside cold
C. Convert the heat absorbed into other forms of energy
D. Maintain the temperature inside the garment

2. The heat energy needed to convert a quantity of liquid at its boiling point to vapour is refered to as
A. Latent heat of fusion
B. Specific latent heat of fusion
C. Latent heat of vaporization
D. Specific latent heat of vaporization

See also: Int. Sci. WAEC Questions: Intro. To Sci. Obj. (Q1-10)

3. The rate of evaporation of a liquid could be increased by
A. Decreasing the surface area
B. Reducing the temperature
C. Maintaining the temperature
D. Removing the vapour as it forms

4. The temperature of a body is 60°c. The body’s temperature in kelvin is
A. 60k
B. 213k
C. 273k
D. 333k

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5. The mode of heat transfer in which the particle carrying the heat move from the hot region to the cold region is known as
A. Conduction
B. Convection
C. Conversion
D. Radiation

6. Which of the following observations is a direct consequence of thermal expansion
I. Cracks in concrete slabs
II. Sagging of electric cables
III. Buckling in railway lines
IV. Cracking noise from roofing sheets
A. I, II and IV only
B. I, III and IV only
C. II, III and IV only
D. I, II, III and IV

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7. A precaution that has to be taken when using a liquid-in-glass thermometer is
A. Holding the bulb in hand when in use
B. Taking the reading quickly before thermal equilibrium is attained
C. Ensuring that the bulb is fully immersed in the substance
D. Ensuring that the bulb touches the vessel containing the substance

8. Which of the following processes increases on a hot day
A. Digestion
B. Egestion
C. Sweating
D. Respiration

See also: ELECTRONICS Obj (Q1-10): Int. Sci. Current WAEC Questions

9. A property of a material that makes it a good conductor of heat is it’s
A. Colour
B. Length
C. Nature
D. Volume

10. Ethanol may be preferred to mercury as thermometric liquid because
A. Ethanol is colourless
B. Mercury has a higher specific heat capacity
C. Mercury wets glass
D. Ethanol has a far lower freezing point

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1. A
2. C
3. D
4. D
5. A

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6. D
7. C
8. C
9. C
10. D

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