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There are 14 pairs of ribs.
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Name the regions of the vertebral column and the number of vertebrae in each.
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Match the following
| 1. | Calcium | a. | Salt |
| 2. | Iron | b. | Fruits |
| 3. | Iodine | c. | Jaggery |
| 4. | Minerals | d. | Pulses |
| 5. | Protein | e. | Milk |
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______ is a method of sowing seeds.
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Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : _____.
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Match the following.
| Column I | Column II |
| a) Temperature | Closeness to the actual value |
| b) Plane angle | Measure of hotness or coldness |
| c) Solid angle | Closeness to two or more measurements |
| d) Accuracy | Angle formed by the intersection of three or more planes |
| e) Precision | Angle formed by the intersection of two planes |
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Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : ______
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What is an indicator? Name three common indicators.
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Pressure exerted by a liquid is increased by
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Which of the following liquids has more viscosity?
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The pressure of a liquid column ______ with the depth of the column.
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Liquid pressure decreases with the decrease of depth.
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Viscosity depends on the pressure of a liquid.
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Describe an experiment to prove that the pressure in a liquid increase with depth.
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If the angle of incidence is 45°, then the angle of reflection is ________.
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An electroscope has been charged by induction with the help of charged glass rod. The charge on the electroscope is
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The body which has lost electrons becomes ________.
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Electroscope is a device used to charge a body by induction.
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Give a reason for the following
When you touch the metal disc of an electroscope with a charged glass rod the metal leaves get diverged.
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Give a reason for the following.
In an electroscope, the connecting rod and the leaves are all metals.
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