Question

TIME AND MOTION
1) The speed of a vehicle is measured by using the device.............
2) What are the factors that depends on the time period of a simple pendulum?
3) Explain uniform and non-uniform motion?
4) Motion of earth around the sun is an example of uniform motion. Explain.
5) Draw the shape of the graph for an object at rest?
6) Explain the different types of motion with example?
HEAT AND TEMPERATURE
1) Boiling point of water in Fahrenheit scale is ...........
2) Rooms are fitted with ventilators to let the air move around. The phenomenon
involved is known as ...................
3) Name the different temperature-measuring instrument?
4) The temperature range of clinical thermometer is from 350 C to 42 0C. Why?
5) Why mercury is used as a thermometric liquid?
6) Define Heat?
7) Steel, aluminium or copper. Which one is good conductor of heat?
8) Why gaps are left between railway tracks?
9) Explain different temperature scale?
10) Explain different method of heat transfer with examples?

LIGHT
1) The light always travels in a straight line. This property of light is known as
....................
2) The bouncing back of light when it hits on a smooth surface is known as
...................
3) Define incident ray, reflected ray, angle of reflection, and angle of
reflection?

4) “The image formed by a plane mirror is always virtual and erect”. Are you
agree with the statement?
5) Explain the characteristic of image formed by a plane mirror?
6) The image formed by a plane mirror is laterally inverted. Explain with
example?

guys pls answer them all

Answer 1

Answer:

1.odometer 3.uniform motion is a motion that velocity and accl. are equal

Answer 2

Answer:

Time and motion

1) Speedometer

2) Answer is on the above picture