Science Worksheet for Class 7 : Heat Chapter – 4
Science Worksheet for Class 7 – In this worksheet, we have questions from Heat chapter 4. This science worksheet makes you exam-ready. By attempting this worksheet with time-bound will give you the best preparedness for the exam.
Q1. List two main effects of heat.
Q2. Define Temperature.
Q3. What do you understand by upper fixed point and lower fixed point?
Q4. Why is mercury and not water used in thermometers?
Q5. Name the scales used to measure temperature.
Q6. Give reasons for the following
i) Ventilators are situated close to the ceiling.
ii) Handles of bikes and scooters are covered with rubber.
iii) We prefer to wear white clothes in summer
iv) Solar cookers are painted black from inside.
Q7. Distinguish between:
i) Conduction and Convection
ii)Conductors and Insulators
Q8. How laboratory thermometer does differ from a clinical thermometer?
Give one word for the following.
Q9 The degree of hotness or coldness of a body.
Q10 Metal used in thermometers.
Q11 Instrument used to measure the temperature of a body.
Q12 Materials that allow heat to pass through them easily.
Q13 Materials that do not allow heat to pass through them.
Fill in the blanks.
Q14 Air is a ________ conductor of heat.
Q15 Solids ________ on cooling.
Q16 Heat is a form of energy that travels from a _______ object to a _______ object.
Q17 A spoon kept in a cup of hot tea gets heated by _________
Q18 The normal body temperature is _______ oC or ____oC
Fill in the blanks.
Q1 ________ is the best conductor of heat.
Q2 Ice melts at ______ oC or ______ oF.
Q3 Water boils at _______oC or ______oF.
Q4 Black bodies ________ and emit ________ heat the best.
Q5 Another name of clinical thermometer is __________ thermometer.
State true or false.
Q6 Heat cannot travel in a vacuum.
Q7 Room heaters warm the rooms by conduction.
Q8 Blankets keep us warm at night in winters.
Q9 The method of heat transfer in a steel rod is by:
a) Conduction
b) Convection
c) Radiation
d) All of the above
Q10. Why is the underside of cooking vessels painted black?
Q11. Why do we feel cold when our body sweats?
Q12. Why only mercury is used in thermometers?
Q13. Explain three modes of transmission of heat i.e. conduction, convection & radiation, with the help of their applications.
Q14 Name the following:
a) Fastest mode of transfer of heat._____________
d) The meta which is used in the bulb of thermometer.___________________
State the reason.
Q15 The thick glass tumblers break when hot liquid is poured into them
Q16. Gaps are left between rail joints to allow for expansion
Q17. Slabs of ice are covered with sawdust or gunny bags
Q18 If we walk barefoot on a stone floor, it appears to be very cold but if walk on a carpet in the same room it feels warmer.
Read related Notes
What are Various Forms of Energy
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