Match the following: Column A Column B 1. Displacement a. Knot 2. Light travels through vacuum b. Geometric centre 3. Speed of ship c. Metre 4. Centre of gravity of the geometrically shaped object d. Larger base area 5. Stability e. Uniform velocity

1- (c) Displacement is a vector quantity with the shortest path from the initial position to the final position It can be measured in the metre. 2- (e) Light travels through a vacuum with a uniform velocity which is equal to 3 × 10 8 m / s . It is magnitude and direction does not change with time. It travels in a straight path. 3- (a) Speed of ship is measured in the knot which is equal to one nautical mile per hour. 4- (b) The centre of gravity is the point where the overall body weight works, while the centroid is the object's geometrical centre. 5- (d) Increasing the base area would also improve an object's stability. The bigger the area, the more stable the object is. Column A Column B 1. Displacement c. Metre 2. Light travels through vacuum e. Uniform velocity 3. Speed of ship a. Knot 4. Centre of gravity of the geometrically shaped object b. Geometrical centre 5. Stability d. Larger base area

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Tamil Nadu Board Class 7 Science Term 1>Chapter 2 - Force and Motion>Evaluation>Q II

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If the velocity of an object increases with respect to time, then the object is said to be in acceleration.

Choose from the bracket (positive/negative/zero).

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Important Questions on Force and Motion

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Tamil Nadu Board Class 7 Science Term 1>Chapter 2 - Force and Motion>Evaluation>Q II

The slope of the speed-time graph gives _____.

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Tamil Nadu Board Class 7 Science Term 1>Chapter 2 - Force and Motion>Evaluation>Q II

In _____ equilibrium, its centre of gravity remains at the same height when it is displaced.

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Tamil Nadu Board Class 7 Science Term 1>Chapter 2 - Force and Motion>Evaluation>Q III

Match the following:

Column A	Column B
1. Displacement	a. Knot
2. Light travels through vacuum	b. Geometric centre
3. Speed of ship	c. Metre
4. Centre of gravity of the geometrically shaped object	d. Larger base area
5. Stability	e. Uniform velocity