Motion and measurement

Which of these are properties of oscillatory motion?

• to and fro movement within equal intervals of time

• Whole body moves

• Periodic

• Vibratory

Name this instrument

• Simple oscillator

• Simple swing

• Simple machine

• Simple pendulum

A is motion taken place at different intervals of time in which a body does not move as a whole. B is motion taken place over equal intervals of time and shape or size does not change. Find A and B and write the type of movement with example.

• A = Rotation

  B= Revolution

  Circular motion

  Ex- Sun

• A = Rotation

  B= Revolution

  Circular motion

  Ex-Earth

• A-= Revolution

  B= Rotation

  Periodic motion

  Ex- Earth

• A= Revolution

  B= Rotation

  Circular motion

  Ex- Sun

Find the example of random motion.

• Butterfly

• Car

• Swing

• An army of ants

Priya saw 3 objects. The first one showed oscillatory motion. The second one showed periodic motion. The third one showed vibratory motion. She saw that object 1 showed one same property as object 2. But object 2 did not do so. Why?

• Because all oscillatory motions are periodic but not in reverse

• Because all periodic motions are oscillatory but not in reverse

• Both a and b

• Object 1 is same as object 2

Radhika's garden is 20 km long. She divided into four parts equally. Give each part in meters.

• 50 m

• 500 m

• 5 m

• 5000 m

SI unit of mass

• Kilogram

• Kilometer

• Meter

• Gram

Name this image

• cubiter

• cubit

• handspan

• pace

Hand measurements- Fathom, Handspan and cubit

Leg measurements- Foot and pace

What are they called?

• Arbitery units

• Uniform units

• Arbitrary units

• Non- Reliable units

Which is correct position?

• A

• B

• C

• None