1. Fill in the blanks:- 8
a) Green plants are called ___________ since they synthesize their own food.
b) The largest gland in the human body is _______
c) The hotness of an object is determined by its ____________
d) Temperature is measured in degree _________
e) The average weather taken over a long time is called ___________
f) Wind is ________ air.
g) Winds are generated due to _____ heating on the earth.
h) In photosynthesis solar energy is absorbed by the pigment called ________.
2. Match the columns:- 6
A B
a) Cuscuta Summer
b) Salivary Gland Physical change
c) Yak Parasite
d) Light coloured clothes Heterotrophs
e) Melting of wax Saliva Secretion
f) Animals Wool yielding animal.
3. Write True or False :- 5
a) Cutting a log of wood into pieces is a chemical change. (______)
b) Tooth decay is caused by the presence of a base. (______)
c) Digestion of starch starts in the stomach. (______)
d) The tongue helps in mixing food with saliva. (______)
e) Carbon dioxide is released during photosynthesis. (______)
4. Choose the correct answer:- 6
a) Which place is unlikely to be affected by a cyclone?
(1) Chennai (2) Amritsar.
b) The silkworm is.
(1) A caterpillar (2) A larva
c) Fat is completely digested in the.
(1) Small intestine (2) Stomach.
d) The plant which traps and feeds on insects is.
(1) Rose (2) pitcher plant.
e) Tamarind is.
(1) Sweet (2) Sour
f) Acetic acid is found in
(1) Vinegar (2) Orange.
5. Define the following terms :- (any 5) 10
Anemometer, Salt, Physical change, Acid, Typhoon, Humidity, Insulator,
Sericulture.
6. Write the answers in one word or in one sentence. (any 5) 5
a) Suggest two methods to find out wind direction at a given place.
b) Which of the two changes frequently: Weather or climate?
c) Name the source from which litmus solution is obtained.
Answers
Answer:
a. Autotroph ( maybe)
b. Pancreatic gland
c. Temperature
d. 32° to 45°
e. Climate
f. Moving air
g. Uneven
h. Chlorophyll
2.
cuscutta = parasite
salivary gland = saliva secretion
yak = wool yeilding animal
light colour cloths = summer
melting of wax = physical change
animals = heterotroph
3.
false
Don't know
false
true
false
4.
Amritsar
Caterpillar
don't know
pitcher plant
sour
vinegar
5.
sericulture the process of domesticating animals like beehive to obtain honey and sheeps to obtain wool
anemometer is a instrument to measure wind speed
physical change a change in which the thing can be brought back to it's original form like melting of ice and boiling of water
insulater is a type of a cover which is made out of a plastic so it can't harm u from electric power and the hotness
6.
a. don't know
b. weather
c. natural indicater ( maybe)