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Question 1.Draw triangles with the measures given below:i. In ∆ABC, l(AB) = 5.5 cm, l(BC) = 4.2 cm, l(AC) = 3.5 cm.ii. In ∆STU, l(ST) = 7 cm, l(TU) = 4 cm, l(SU) = 5 cm.iii. In ∆PQR, l(PQ) = 6 cm, l(QR) = 3.8 cm, l(PR) = 4.5 cm.Solution:i. In ∆ABC, l(AB) = 5.5 … Read more

Question 1.Draw line segments of the lengths given below and draw their perpendicular bisectors:i. 5.3 cmii. 6.7 cmiii. 3.8 cmSolution:i. Line AB is the perpendicular bisector of seg PQ. ii.Line UV is the perpendicular bisector of seg ST. iii.Line ST is the perpendicular bisector of seg LM. Question 2.Draw angles of the measures given below … Read more

Textbook Questions and Answers 1. Name these. Question a.Birthplace of stars.Answer:Nebulae Question b.The biggest planet in the Solar System.Answer:Jupiter Question c.The galaxy which is our neighbour.Answer:Andromeda Question d.The brightest planet in the solar system.Answer:Venus Question e.Planet with the largest number of satellites.Answer:Jupiter Question f.Planet without a single satellite.Answer:Venus and Mercury Question g.Planet with a rotation … Read more

Textbook Questions and Answers  1. How will you do this? Question a.Determine whether a material is magnetic or non-magnetic.Answer: Question b.Explain that a magnet has a certain magnetic field.Answer: Question c.Find the north pole of a magnet.Answer: 2. Which magnet will you use? Question a.Iron is to be separated from a trash.Answer: An electromagnet is … Read more

Chapter 14 Light and the Formation of Shadows Textbook Questions and Answers 1. Choose an appropriate word and fill in the blanks. Question a.A ……………. is a natural source of light.Answer:star Question b.A ………….. is an artificial source of light.Answer:candle Question c.When light passes through a prism, it gets separated into ………….. colours.Answer:seven Question d.The … Read more

Textbook Questions and Answers 1. Fill in the blanks with the proper words. Question a.The propagation of sound does not occur through a ………….. .Answer:vacuum Question b.Noise pollution is a …………… issue.Answer:social/serious Question c.The sound which is disagreeable to our ears is called …………… .Answer:noise Question d.Noise has adverse effects on our …………….. .Answer:health 2. … Read more

Chapter 12 Simple Machines Textbook Questions and Answers 1. Classify the following as a lever, a pulley and an inclined plane:(A wedge, a needle, a staircase, a slide, the wheel of a flagpole, nutcrackers, scissors, an opener, an axe, a crane, a knife) Question a.Classify the following as a lever, a pulley and an inclined … Read more

Textbook Questions and Answers 1. Fill in each blank with the appropriate term from the brackets. Question a.A bucketful of water is to be drawn from a well ………. will be done when a ………… is applied to do this, because there will be an ……………. of water.(displacement, workforce)Answer:work, force, displacement Question b.If a ball … Read more

Chapter 10 Force and Types of Force Textbook Questions and Answers 1. Choose the term and fill in the blanks: Question a.……….. has to be applied to change the ……….. of a ……….. object.(moving, direction, force)Answer:force, direction, moving Question b.When an elephant drags a wooden log over the land, the forces that are applied on … Read more

Textbook Questions and Answers 1. Identify the types of motion. Question a.Movement of the earth around the sun: …………… .Answer:periodic, drcular Question b.Movement of ceiling fan: …………… .Answer:circular Question c.A rocket launched from the ground: ……….. .Answer:linear Question d.A fish swimming in water: ……… .Answer:random Question e.The plucked string of a sitar:………….. .Answer:oscillatory motion 2. … Read more