Science Practice Test - II
Grade - 7 [ 30 Marks ]
- Priyanka Chandratre
Portion : 1) Heat and Temperature
2) Electric Current and Simple Circuits
Q. 1] Fill in the blanks. [ 4 Marks ]
i) Thermometer works on the principle of ___________________
ii) Magnetic effect of current was first discovered by _________________
iii) A digital thermometer does not contain _______________
iv) __________ gas is commonly used in bulb.
Visit Our YouTube Channel : Chandratre's Edu Hub
Q.2] State whether the following statements are TRUE or FALSE. [ 4 Marks ]
i) Gases expands on heating.
ii) The range of a laboratory thermometer is from 0°C to 100°C.
iii) The more the number of turns in the wire, the stronger is the magnetic effect.
iv) The direction of current in an electric circuit is from the positive terminal to the negative terminal of battery.
Solve More : Science Practice Test - I
Q.3] Name the following. [ 4 Marks ]
i) The iron rod, around which the wire is wound.
ii) The flow of electric charge.
iii) Unit of heat.
iv) Invention of Fahrenheit temperature scale.
Solve More : Social Science Test
Q.4] Differentiate between following. [ 2 marks ]
i) Kelvin temperature scale and Fahrenheit temperature scale.
ii) Heating effect of electric current and Magnetic effect of electric current.
Q.5] Define the following terms. [ 3 Marks ]
i) Electric circuit
ii) Battery
iii) Convection
Q.6] Identify the images and explain about them. [ 4 Marks ]
i)
ii)
Q.7] Answer the following questions in brief. [ 3 Marks ]
i) What are the uses of electromagnet?
ii) What is the function of a switch in an electric circuit?
iii) Write the interconversion between Fahrenheit and Celsius scale.
Q.8 ] Answer the following questions in detail. [ 6 marks ]
i) What do you understand by radiation? Explain about its applications.
ii) Why the circuit in the electric bell is called 'Make- Break Circuit'?
iii) What are MCBs ? How they prevent short circuits?
