Model Answer for standard VI

Q.No	Questions		Marks
1 A)	Fill in the blanks for given objects		3
1	Stone is a ……………….thing.
Ans	Non-living		1
2	Amoeba, Paramoecium are…………animals
Ans	Unicellular		1
3	The root grows from the ………under the ground
Ans	Radical		1
B)	Match the following		3
	Group ‘A’	Group ‘B’
1	Vertebral animal	Monkey	1
2	Maglev train	Magnetic force	1
3	Random motion	Butterfly	1
C)	Say whether the following statements are true or false		2
1	A back and forth repetitive motion is called random motion
Ans	True		1
2	Force is necessary to move an object
Ans	True		1
Q. 2A)	Define (Any 2)		2
1	Leaf margin
Ans	The edge of leaf is called as leaf margin		1
2	Static electric force
Ans	Electricity produced due to friction is called as static electric force		1
3	Flowering plants
Ans	The plants that bears flowers are called as flowering plants		1
B)	Give scientific reasons. (Any 2)		4
1	Plants cannot move from one place to another.
Ans	Plants stand firm at one place with help of roots. They donot have parts for locomotion. So they cannot move from one place to another.		2
2	We sprinkle talcum powder on a carom board.
Ans	Talcum powder reduces frictional force between surface of carom board and coins or striker. It helps in playing easier. So talcum powder is sprinkled on carom board.		2
3	We cannot measure the speed of a butterfly.
Ans	The speed of butterfly has no any definite direction. So we cannot measure the speed of butterfly.		2
C)	Draw neat and labeled diagrams. (Any 1)		2
1	Parts of the stem.
2	Different types of mesearing jars
Q. 3A)	Answer in one sentences. (Any 2)		2
1	In which units is petrol is measured?
Ans	Petrol is measured in Liter and Milliliter		1
2	What is used to measure the volume of liquid?
Ans	Measuring jar		1
3	What is used to find the area of an irregular surface?
Ans	Graph		1
B)	Answer in short.		4
1	Explain periodic motion with the help of example
Ans	When moving object passes through a certain point at regular intervals of time, the motion is called as periodic motion. G.g. hands of clock		2
2	What are the effects of force applied to an object?
Ans	Effects of force on a object :- 1.     A stationary object gets motion 2.     The speed of moving object changes 3.     The direction of object changes 4.     The shape of object changes		2
3	Give two characteristics of non-flowering plants
Ans	Characteristics of non-flowering plants :- 1.     They do not bear flowers. 2.     The plants like mushrooms and moulds are very distinct than they appear.		2
C)	Give two examples of each.
1	Trees
Ans	1.     Neem    2. Banian		1
2	Annual plants
Ans	1.     Bajra       2.   Jowar		1
Q. 4A)	Distinguish between two points. (Any 1)		2
1	Muscular force	Mechanical force
Ans	1.     The force applied by muscles is called muscular force	1.     The force applied by machines is called as mechanical force	1
	2.     Domestic animals like bullocks uses muscular force to work	2.     Different machines like tractors, cars are used to apply mechanical force	1
2	Growth of plants	Growth of animals
	1.     Growth of plant is not limited for time	1.     Growth of animals is limited for time	1
	2.     Plants grows continuously as long as they live	2.     Animals grows during specific period of life	1
B)	Write notes on (Any 2)		4
1	Static electric force :
Ans	The electricity produced due to friction is called as static electric force. This force produces only on the pairs on specific substances like plastic comb, woolen clothes, plastic chairs etc. this is weakest force of all forces. The created force vanishes in a short period..		2
2	Capacity :
Ans	The volume of liquid that a vessel can hold is called as capacity. There is different capacity of each vessel. E.g. capacity of water tank, capacity of measuring jar. The capacity is mentioned in liters, milliliters, and kiloliters etc.		2
3	Possible sources of errors in measurement :
Ans	While doing any type of measurement there can be possible errors. In measurement the following errors can be occurred : 1.     The limitations of instruments itself. 2.     Carelessness on the part of person who measures a quantity or thing.		2
C)	Give answers. (Any 1)		2
1	F.T.P. is a system of measurement.find what it means.
Ans	In F.P.S. measurement system      F.= Feet      P.=pound      S=Second		2
2	Name device s that make use of magnetic force.
Ans	The following devices make use of magnetic force :- 1.     Speakers 2.     Maglev train 3.     Fans 4.     Electric motors		2
Que 5	Write any two subquestions		8
1	Where are the following parts located on the plant
Ans	a.     Root cap :       Tip of the root. b.    Stalk :              Bottom of the flower c.     Veins :             In the blade of leaf d.    Thalamus :      At bottom of leaf attached to stalk		4
2	Names of old devices of measurement. What were its disadvantages.
Ans	Old devices of measurements : a.     Grains were measured with Handfuls b.    Distance was measured with foots c.     Cloth was measured with arm-lengths d.    Time was measured with sun rise and sunset Disadvantages: As  the size of body body parts differs from person to person, such devices were neither uniform nor accurate.		4
3	What does the law make compulsory with respect to weight and measure?
Ans	With respect to weight and measure, the following laws are made compulsory : a.     There should be standardized mark or the stamp of department of weight and measures on the beam of balance. b.    A weight has to be made up of metal and not any of other material such as wood. c.     There should be hole in the centre of every weight. It should be filled with lead. This lead should bear a mark of department of weight and measures. d.    The unmark weight is considered as non-standardized. The department takes notice of any such incident and punishes the retailer as per rule.		4