VII SCIENCE
REFRESHER COURSE ANSWER
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FORCE AND MOTION
I. Choose the correct
Answer
1.
m/s
2.
west to east
3.
periodic motion
II. Complete the
Analogy
4.
non contact force
5.
Swinging of pendulum
6.
metre/second
III. Fill ups
7. Non contact force
8. Linear
9. Non uniform
10. Rotatory
IV write True of False
11.
False
12.
True
13.
False
14.
True
V.Match the following
15.
The tip of hands of a clock - circular motion
16.
The motion of train - uniform motion
17.
Flapping of a flag in wind - non periodic
motion
18.
Movement of needle in a sewing machine -
periodic motion
19.
Movement of the wheel - rotatory motion
20.
swinging of a pendulum - oscillatory
motion
Electricity
I Choose the correct
Answer
1. Battery
2. Eel
3. Silver
4. Parallel
5. Laptop
II Fill ups
6. Conductor
7. Electric
source
8. Key
9. Thomas
Alwa Edison
10. Muppandal
III. True of False
11. False
12. False
13. True
IV Odd one out
14. Electricity
15. Needle
V. Match the following
16. Bulb does not glow
17. cell
18. open key
19. battery
MEASUREMENT
I.
Choose the correct Answer
1.
M
2.
Measurement
3.
5000m
4.
Litre
5.
French
II.
Fill ups
6.
2 metre
7.
one sixth of
8.
100 centimetre
9.
Physical Quantity
10.
Liquid displacement method
III.
True or False
11.
True
12.
False
13.
False
14.
True
15.
True
IV.
Match the following
16.
Temperature
17.
Distance
18.
Current
19.
Amount of Substance
20.
Intensity of Light
HEAT
I.
Choose the correct Answer
1.
370c
2.
Ice
3.
Heat energy
II.
Fill ups
6.
Heat
7.
Temperature
8.
Heat
9.
Sun
10.
Heat
III.
True or False
11.
False
12.
False
13.
False
14.
True
15.
True
IV.
Match the following
16.
Joule
17.
kelvin
18.
No thermal conduct
19.
00c
20.
1000c
MATTER AROUND US
I.
True or False
1.
True
2.
False
3.
True
4.
False
5.
True
II.
Match the Following
6.
Evaporation
7.
Winnowing
8.
Magnetic Separation
9.
Filtration
10.
Churning
III.
Fill in the Blanks
11.
24 karat goled
12.
mixture
13.
centripetal force
14.
sieving
15.
mixture
IV. Choose the correct Answer
16.
Rubber band
17.
Moisture
18.
Sieving
19.
Liquids
20.
Needle
CHEMISTRY IN EVERYDAY LIFE
I.
Choose the correct Answer
1.
Sodium hydroxide
2.
Vermi compost
3.
Starch
4.
Gypsum
5.
Chemical change
II.
Fill in the Blanks
6.
Earth worm
7.
syn propanethial s oxide
8.
Fermentation
9.
Urea/Ammonium Nitrate
10.
Exothermic process/Hydration
III.
Find the odd one out
11.
Gypsum
12.
Urea
13.
Starch
14.
Clay
15.
Urea
IV.
Match the following
16.
Plant Growth
17.
Bone fracture
18.
Disinfectant
19.
Cement
20.
Natural indicator
CHANGES AROUND US
I.
Choose the correct Answer
1.
Slow change
2.
Chemical change
3.
Formation of curd from milk
4.
Physical change
5.
Ripening of fruit
II.
Fill in the Blanks
1.
Fast
2.
Reversible
3.
Undesirable
4.
Construction of buildings
5.
Natural change
III.
Match the following
1.
Fast change
2.
Irreversible change
3.
Slow change
4.
Chemical change
5.
Natural changes
IV.
Analogy
1.
Irreversible
2.
Desirable change
3.
Irreversible change
4.
Slow change
5.
Freezing
THE WORLD OF PLANT
I.
Fill in the Blanks
1.
70
2.
desert
3.
root
4.
leaves
5.
dicotyledons
II.
Choose the correct Answer
1.
Fresh water
2.
Traspiration
3.
Root
4.
Aquatic
5.
Mountain
III.
state True or False
1.
False
2.
True
3.
False
4.
False
5.
True
IV.
Match the Following
1.
Himalayas
2.
Dry places
3.
Branches
4.
Leaves
5.
Monocot plants
HEALTH AND HYGIENE
I.
Choose the correct Answer
1. Protein
2. Vit C
3. Minerals
4. they are rich in minerals and vitamins
5. prokaryotic
II.
Fill in the Blanks
1. deficiency
2. goiter
3. rickets
4. food
5. virus
III.
Match the Following
1. Night blindness
2. Beri Beri
3. Scurvy
4. Rickets
5. Sterility
IV.
Complete the Diagram (Nutrients)
1. protein
2. carbohydrate
3. cholesterol
4. water
5. minerals
6. vitamin
THE WORLD OF ANIMALS
1. Find the animal below
c. Frog
2. Examine the given image
a. what
bird is this?
Duck
b. what
can we compare this to
boat
paddle
3. The gills are used as a respiratory organ
4. Penguin
5. Frog
6. Desert-Penguin
7. Migration
8. Kangaroo rat
9. I calculate my age by counting year, month and days.
The age of fish can be calculated by counting the number of annuli or year
marks
10. Arthropods insect. It belongs to insect species
11. Amoeba, paramecium, flagellam, Euglena
12. Fish, Snake, Bird
13. The fish respire with the help of gills. The
structure of gills that helps fish respire inside water. It cannot breathe
through the atmospheric oxygen and hence the fishes die when taken out of the
water
14. correct
15. Birds
16. Egg is single celled
17. Paramecium,
Amoeba, Euclena
18. Multi cellular Organisms
a.
Monkeys
b. Human
c.
Plants
d. Cats
HUMAN ORGAN SYSTEM
1. X ray
2. nervous system
3. 3-c
4. 4-b
5. cornea
6. Sternum
7. Protection of internal organs
8. Skull
9. Eyes
10. All the above
11. Tongue
12. It causes indigestion, burb, stomach irritation,
chest irritation
13. c
14. Urea
15. b
16. Skeletal muscles
17. Choking is caused when a piece of food or other
object gets stuck/block in the upper airway
18. Heart beat rate is 80-85
19. Vitamin D
20. Fill in the Blanks
a. Eye
b. Ear
c. Skin
d. Mouth
e. Nose
THE CELL
I.
Choose the correct Answer
1. Spirogyra
2. Micrometer
3. Nucleus
4. Prokaryotic cell
5. Nerve cell
II.
Fill in the Blanks
1. Microscope
2. plasma membrane
3. Nucleus
4. 0.1
5. Chlorophyll
III.
Write yes or No
1. Yes
2. Yes
3. Yes
4. Yes
5. Yes
IV.
Match the following
1. Nucleus
2. Chloroplasts
3. Nuclear membrane
4. Cell Membrane
5. Mitochondrias
PLANTS IN DAILY LIFE
I.
Choose the correct Answer
1. Bacillis
2. Rose mullai and jasmine
3. Banana tree
4. Silk worm
II.
Fill in the Blanks
5. Herbal
6. Tuber
7. Jute
8. Cardamom
III.
Match the following
9. Flower bud
10. Fruit
11. Seed
12. Bark
IV.
Who am I
13. Black pepper
14. Neem
V. Find the Odd one out
15. Karpooravalli
16. Amla
VI.
True or False
17. True
18. False
VII.
Analogy
19. Nut
20. Stem
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