FOUNDATION ACADEMYIIT Patna, Bihta CampusHOLIDAY HOMEWORK

SESSION 2020-21GRADE IX

SCIENCEBIOLOGYActivity 1: Biodegradable and Non-Biodegradable Materials

Find out biodegradable and non-biodegradable material used in day to day life.Procedure:

1. Find out different types of waste materials.2. Find out their physical and chemical properties (Reaction towards water and

combustion reaction)3. Are there any harmful gases coming out after burning of materials (to be done

under the guidance of an elder)?4. Categorise them into biodegradable and non-biodegradable on the basis of their

properties.5. Think about how you can reduce, reuse, recycle and recover (4R's principle) on

biodegradable materials and write about it.Activity 2: Reasons for biodiversity loss

To study the effect of polluted water and oil spills on bird population.a) Take three feathers of a bird.b) Dip one feather in the water, another in oil and the third one in soap water.c) Note down the observations in the following table and interpret.

Dipped inwater

Dipped in Oil Dipped inSoap water

Feather

Briefly explain your observations along with reasons for it.CHEMISTRYActivity 1: Adopt-an-Element (gaseous form)Requirements: In this activity, you will be conducting research on your specific element. You

will then use this information to create an advertisement for that element1. Complete an "Adopt-an-Element" information sheet. (On A –4 size paper) You may

use a variety of reference sources. Possible ideas are encyclopaedias (book or web-based), textbooks, the Internet, etc. Information sheets must be NEAT and CONTAIN ALL THE INFORMATION. You need to include a list of your sources that you used (at least 2 are required).

2. Create an advertisement for your element. (On a A4 paper). The advertisement must include the element's name, symbol, atomic number, atomic mass, a unique use for the element advertising slogan that describes one or more of its important uses or qualities.

Advertisements must be neat, colourful, and contain all the information listed above. You may add pictures that relate to your advertisement theme.

PHYSICS

Q1. An air-plane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance travelled before takeoff.

Q2. A Jeep starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the Jeep.

Q3. John is riding the Giant Drop at Canada. If John free falls for 2.6 seconds, what will be his final velocity and how far will he fall?

Q4. A racing car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car and the distance travelled.

Q5. A feather is dropped on the planet other than earth which has very low acceleration

due to gravity from a height of 1.40 meters. The acceleration of gravity on the other planet is 1.67 m/s2. Determine the time of feather to fall to the surface of the other planet.

Q6. Rocket-powered sleds are used to test the human response to acceleration. If a rocket- powered sled is accelerated to a speed of 444 m/s in 1.8 seconds, then what is the acceleration and what is the distance that the sled travels?

Q7. Honda Activa accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4 m. Determine the acceleration of the bike.

Q8. An Aeronautics engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The take off speed for this plane will be 65 m/s. assuming this minimum acceleration, what is the minimum allowed length for the runway?

Q9. A BMW car travelling at 22.4 m/s skids to a stop in 2.55 s. Determine the skidding distance of the car (assume uniform acceleration).

Q10. A kangaroo is capable of jumping to a height of 2.62 m. Determine the take off speed of the kangaroo.

Q11. If Rahul has a vertical leap of 1.29 m, then what is his take off speed and his hang time (total time to move upwards to the peak and then return to the ground)?

Q12. A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the riffle, the bullet moves a distance of 0.840 m. Determine the acceleration of the bullet (assume a uniform acceleration).

Q13. A baseball is popped straight up into the air and has a hang- time of 6.25 s. Determine the height to which the ball rises before it reaches its peak. (Hint: the time to rise to the peak is one- half the total hang-time.)

Q14. The observation deck of the tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the deck to the street below.

Q15. A bullet is moving at a speed of 367 m/s when it embeds into a lump of moist clay. The bullet penetrates for a distance of 0.0621 m. Determine the acceleration of the bullet while moving into the clay. (Assume a uniform acceleration.)

Q16. A coin is dropped into a deep well and is heard to hit the water 3.41 s after being dropped. Determine the depth of the well.

Q17. It was once recorded that a Jaguar left skid marks that were 290 m in length. Assuming that the Jaguar skidded to a stop with a constant acceleration of -3.90 m/s2, determine the speed of the Jaguar before it began to skid.

Q18. A plane has a takeoff speed of 88.3 m/s and requires 1365 m to reach that speed. Determine the acceleration of the plane and the time required to reach this speed.

Q19. A dragster accelerates to a speed of 112 m/s over a distance of 398 m. Determine the acceleration (Assume uniform) of the dragster.

Q20. With what speed in miles/ h (1 m/s= 2.23 mi/hr) must an object be thrown to reach a height of 91.5 m (equivalent to one football field)? Assume negligible air resistance.

Q21. A Truck starting from rest moves with a uniform acceleration of 0.2 m /s2 for 2 minutes. Find,(a) the speed acquired(b) the distance travelled.

Q22. An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.

Q23. A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s-2, with what velocity will it strike the ground? After what time will it strike the ground?

Q24. State which of the following situations are possible and give an example for each of these: (a) an object with a constant acceleration but with zero velocity (b) an object moving with an acceleration but with uniform speed. (c) an object moving in a certain direction with an acceleration in the

perpendicular direction.

PROJECT: MAKE A PROJECT ON Bottled-up Buoyancy.AbstractDo you dream about making deep, undersea voyages? Let this project take you 20,000 leagues under the sea! Investigate how submarines dive and surface by changing their buoyancy in this fun project. Materials and Equipment 2-liter soda bottle (1) Water bottle, standard size, approximately 500-700 mL (1) Razor blade or knife Drill with a 3/32-inch drill bit; be sure to confirm, but this size should create a hole that will fit the paper clip you'll be inserting Scissors Pen or needle Needle-nose pliers Large paper clips (2) Metric liquid measuring cup Permanent marker Chopsticks Stiff ruler Rubber bands (3) Waterproof sealant (such as silicone) Bathtub (or pool), filled with water Lab notebook

Experimental Procedure: Click on the image to view the Soda Bottle Submarine building instructions. If desired, print out the instructions.Making the Propeller

To begin making the propeller, cut the bottom half of the 2-L soda bottle. Cut the bottom, as shown by the howtoons.com worksheet, to make a propeller shape that has five separate curved blades. This is difficult because the plastic is thick in certain places. Have an adult carefully use a razor blade or a knife to help you with this tricky step. See Figure 2 for a picture of the finished propeller.II. Have an adult drill a hole in the small water bottle cap and drill two holes in the propeller, one in the center and another just off center. Be sure to wear safety goggles when using power tools. Using scissors cut a small circle of plastic out of the remains of the 2-L soda bottle. The circle should be about the same size and shape as the submarine (small water bottle's) bottle cap. This piece will go in between the bottle cap and the propeller and will serve as a washer-the propeller needs a slippery surface against which to spin. Using a pen or a needle, carefully make a hole in the middle of the washer, big enough for the tip of a paper clip to easily fit through. Use caution if you use a needle so you don't poke yourself.

Straighten one end of one of the paper clips and feed it through the hole in the top of the bottle cap, then through the washer, and finally through the center hole of the propeller. The propeller fins should be facing down curved away from the bottle cap. Bend the inside end with the needle-nose pliers, looping it through the second off-center propeller hole to secure the paper clip and two pieces together. You will use the water bottle for the submarine, but first you need to add measurement markers on it to help you fill the submarine with different amounts of water during your trials. Using a metric liquid measuring cup, pour water into the bottle, 20 mL at a time, each time drawing a line with a permanent marker where the top of the water is. When you are done, you can label the lines (20 mL, 40 mL, 60 mL ...500 mL) for easier measuring later.

Making the Submarine To make the submarine, have an adult drill two small holes in the bottom of the water bottle, just like the holes in the propeller—one in the center and one slightly off-center.

Straighten one end of the second paper clip and use chopsticks to insert the straight end of the paper clip through the hole of the water bottle, from the mouth of the bottle into the centered hole at the end of the water bottle. This step is tricky!

Once you get the straight end out, use the pliers to bend the end over and hook it into the other off-center hole to secure it.

Use the chopsticks again to hook a rubber band onto the paper clip hook inside the water bottle submarine.

Without letting go of the rubber band, hook the other end of the rubber band loop through the paper clip hook inside the bottle cap propeller. If it is too difficult to pull the rubber band using chopsticks, use another paper clip to make a hook and use this to pull the rubber band to the hook in the bottle cap propeller. Make sure the rubber band is tight—the submarine's rubber band needs good tension or it won't be able to move. If the rubber band is too loose, try a smaller size. See Figure 3 for a picture of the connected assembly with a 2-L bottle submarine.Note:(a 2-L bottle is used in this figure because it is bigger, making the assembly easier to see—remember, you are using a smaller water bottle). Connect the ruler as a stabilizing fin, using two rubber bands. Place the ruler perpendicular and so it is just centered to the submarine. Attach it with two rubber bands that form an "X" around the bottle and the ruler. Using the waterproof sealant, make sure that the paper clip holes are fully sealed. Water can easily move in and out of the submarine if there are still holes, which will affect the experiment. Give the sealant enough time to dry before proceeding with the experiment—see the sealant's instructions.

MATHEMATICSChapter: PolynomialsUsing the remainder theorem, find the remainder Q No 4 to 16 of ex 2 (C) from R. S. Agarwal.Chapter: Factorisation of polynomialsDo at least 50 sums from R. S. Agarwal including Exercise 3B, 3C, 3D, 3E, 3FActivity and projects:

Represent √2, √3, √5 on the number line working model on the Chart paper.

ENGLISH

Activity 1: With a prompting title page, prepare a mini book to provide a comprehensive coverage on health safety and personal hygiene habits. Mini book /scrap book must incorporate the following:

Title page Graphics Data Posters Articles Dental care Cut-outs from newspaper/ magazines Bathroom Etiquettes

Activity 2: Collect the data from internet and newspaper and plot a bar graph depicting the increasing rate of COVID 19 patients in top 5 cities of our country and prepare a report on it highlighting your observations and other relevant details.

हि�न्दीपाठ्य पुस्तक से (गद्य खण्ड)पाठ 2 लि�खि�त प्रश्न संख्या (1 , 3, 6 )पाठ 3 मौखि�क प्रश्न संख्या ( 1, 2 ,3 ,7 ) लि�खि�त प्रश्न संख्या (1, 4, 6)पाठ 4 मौखि�क प्रश्न संख्या (1, 2,5,, 6) लि�खि�त प्रश्न संख्या (1, 2) (काव्य खंड )पाठ 9 (रैदास के पद ) प्रश्न संख्या (2, 3)पाठ 10 (रहीम के दोहे ) प्रश्न संख्या ( 2 ,3 )पूरक पाठ्य पुस्तक ( संचयन ) पाठ 1 प्रश्न संख्या (1, 4,6,8,9 )व्याकरण से(1) नि�म्�लि�खि�त शब्दों का वर्ण" निवचे्छद कीजि&ए : प्रतीक्षा, श्रेणिर्णयों, अ�ुभूनित, तेईस, एवरेस्ट, अनि2म, वृक्ष, सौभाग्य, हस्ताक्षर, साम2ी ।(2) नि�म्�लि�खि�त उपसर्गों8 से ती�-ती� शब्द ब�ाइए । अणिभ, नि�र , बद , अ�ु ,सम, पु�र, दुर, सह, प्र , सु ।(3) नि�म्�लि�खि�त प्रत्ययों से ती�-ती� शब्द ब�ाइए । त्व, आवट, इक, ई�ा, आई, आव�ा, आऊ, ई�ी, ऐया, आहट ।(4) नि�म्�लि�खि�त शब्दों का संधिA निवचे्छद कीजि&ए । &ीर्णोंद्घार, चंद्रोदय, मतैक्य, �ारीश्वर, मु�ीश, �दीश, एकैक, महेश्वम", तथैव, �वोदिदत ।प्रोजेक्ट काय" योर्गों का महत्व या स्वच्छ भारत अणिभया� निवषय पर लिचत्र के साथ 100 शब्दों अ�ुचे्छद लि�खि�ए । अथवा अप�े पाठ्य पुस्तक में आये सभी �े�क तथा कनिव के &ीव� परिरचय लिचत्र सनिहत चाट" पेपर लि��कर

तथा ब�ाकर �ावें।अथवा

"वैणिश्वक महामारी उन्मू��" पर 50 शब्दों में लिचत्र के साथ एक निवज्ञाप� लि��ें ।

SOCIAL SCIENCE

COMPUTERPROJECT: Create a document (3-5 pages) on the topic “National parks of India”.

Then take printout of your document.The document contains the following things:

● Images

● Apply different styles

● Bullet/Numbering

● TablePoints to be incorporated:● Cover page

● Acknowledgment

● printout of your document Requirements:● Collect the information about the topic

● Microsoft Word

● Printer

● Stick file

Roll No. Topic

1-10 Chandoli National Park

11-20 Gorumara National Park

21-30 Jaldapara National Park

31-40 Kuno National Park

41-50 Orang National Park