Class -IX. Assignment MATTER IN OUR …

Class -IX. Assignment MATTER IN OUR SURROUNDINGS 1. Fill in the blanks. (1) Anything that occupies space and has mass is ...... (ii) Matter exists in three states.............,.............. and ....... (iii) The mass per unit volume of a substance is called ............ (iv) The temperature at which a solid melts to become a liquid is called its ............ (V) The temperature at which a liquid starts boiling at the atmospheric pressure is known as its.................... (vi) When ice melts, there is a................in volume. (vii) Increase in pressure,..........the boiling point of water. (viii) The phenomenon of change of a liquid into gas at any temperature below its boiling point is called ............. (ix) The intermixing of particles of two substances on their own is called .......... (x) The sun and the stars glow because of the presence of .... ... in them. 2. Mark the statements true or false (i) Evaporation causes cooling. (ii) Boiling is a surface phenomenon. (iii) Evaporation is a bulk phenomenon. (iv) The unit of pressure is Pascal (Pa). (V) The melting point of ice is 373 K. (vi) Liquids have a fixed volume but they have no fixed shape. (vii) Gases do not flow. (viii) The spaces between the molecules are the minimum in solids. (ix) The forces of attraction between the molecules are negligible in solids. (x) The movement of molecules is the minimum in solids.

50890452028 class 9 science chapter 5 cell basic unit of life PLZ ATTEMPT

Write an activity so that the particles of matter move

Are yaar jaldi online class karenge

An object Travels along East a straight path with a speed of 36 km per hour for 10 seconds then it moves in a circular path of radius 21 m to complete half circle and 5 seconds then it moves along south for 10 m in 10 seconds find average velocity and average speed Total distance and total displacement of the object

Question 1. The grass looks green, papaya appears yellow. Which cell organelle is responsible for this?

Ch-1 Matter in our surroundings

Cell size, shape and number

a bus decreases its speed from 80 km h to 60 km h in 5 s Find the acceleration of the bus.

Science ki definition

A car moving with a speed of 20 km per hour and stop at a gas station with the given speed 40 km per hour given the final time 2 hours to reach the gas station from initial point find the rate of change of vilocity of the car