Force and pressure Worksheet-13
(a) Squeezing a piece of lemon between the fingers to extract its juice.
(b) Taking out paste from a toothpaste tube.
(c) A load suspended from a spring while its other end is on a hook fixed to a wall.
(d) An athlete making a high jump to clear the bar at a certain height.
(b) Why does blood ooze out when there is a slight cut on your body?
(b) What happens to the atmospheric pressure on mountains?
(c) What makes a balloon stretch if it is filled with air?
(b) Where is the pressure greater, 10 m below the surface of sea or 20 m below?
(c) Where is pressure greatest and the least inside a bottle filled with water.
(b) What is the unit of weight?
(c) Name the device used for measuring the weight of an object.
(d) Can weight be taken as a measure of force?
(a) Raindrops falling on the earth.
(b) Holding a book on your hand.
(c) Running a comb through your dry hair.
(d) A bar magnet suspended freely.
(e) Bullocks ploughing the field.
(a) The temperature is high.
(b) The humidity in air increases.
(c) Metrological office predicts fair weather.
(d) There is a storm.
(e) The weather is dry.
Why do we rub our hands in winter?
(a) Fingers Lemon Lemon juice comes out.
(b) Fingers Toothpaste tube Toothpaste comes out.
(c) Spring Load Load is suspended.
(d) Athlete Bar Jumping.
(b) Blood pressure is little greater than atmospheric pressure. Due to this, the blood oozes out when we have a slight cut on our body.
Sharp knife, pointed nails are based on this principle.
(b) As we go on the mountains, the atmospheric pressure decreases.
(c) The air exerts pressure on the balloon and therefore, it stretches.
(b) 20 m below the surface of sea the pressure is greater.
(c) The pressure is greatest at the bottom and least on the surface of water filled in a bottle.
(b) Unit of weight is Newton or kilogram weight.
(c) Spring balance is used for measuring the weight of an object.
(d) Yes, the weight can be taken as a measure of force.
(b) Force of gravitation (weight).
(c) Electrostatic force.
(d) Magnetic force.
(e) Muscular force.
(b) Atmospheric pressure decreases.
(c) Atmospheric pressure increases.
(d) Atmospheric pressure decreases.
(e) Atmospheric pressure increases.