Second semester Examination (2017-1018)

Grade:KS 2 Science Total Marks: 100

Name: Roll No Time : 2 Hours

Section A Chemistry

Q-1)

1

E

[5]

Q-2)

2

Q-3)

3

Q-4)

4

Q-5) Answer the following questions:

1. Give any two effects of Acid rain.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..…………………….[2]

2. What is a radioactive material? Give one example.

……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….[2]

3. Give any two safety precautions used in the Laboratory.

……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….[2]

4. Write any two uses of igneous rock.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….………………….[2]

5. What is loam?

……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..……………………….[2]

6. What are index fossils?

……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….[2]

7. Give the elements present in Stainless steel and one use of it.

…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….……………….[3]

5

Section B BIOLOGY

Q1. This is a food web involving many other food chains which are interlinked. Answer the questions given below looking at the food web.

Name the producers ____________ ________________ [1]Name any two consumers _____________ ________________ [1]Name any secondary tertiary consumer ____________________How will the food chain be affected if the population of caterpillar decreases?

[2]______________________________________________________________________________________

_______________________________________________________________________________

Q2. Complete the following graphic organiser with details about animal kingdom.

8 marks

6

Animal kingdom

Invertebrates

Bony fish

Birds MolluscsEchinodermAnnelid worms

Nematode

Q3.

Which group this animal belongs to : _____________________ [1]

Where is it commonly found : __________________________ [1]

What makes it most suited to that environment? Give three features. [3]

_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Q4.

On the diagram label the bones. [4]

What kind of joint is the knee joint? _____________________ [1]

Label any one ball and socket joint ______________________ [1]

Q5.

7

a. The photograph shows ways of getting energy from different sources. Under each photograph write

the names of the energy resources [1]b. Name any one fossil fuel. _______________________ [1]c. The solar cells cannot work at night. Give the reason for this. [1]

__________________________________________________________________________________d. The wind turbine cannot generate electricity all the time.re Give the reason for this.

[1]__________________________________________________________________________________

Q6. Which organ system: [2]

a. Transport the materials around the body._______________b. Removes waste from the body_______________________

Q7. Draw and label various parts of the plant cell. [2]

Q8. We know that bacteria are harmful to humans and cause many disease but they are useful to us sometimes. Give any two uses of bacteria. [2]

__________________________________________________________________________________________________________________________________

Section C PHYSICS

Q.1.

8

Q.2

9

10

Q.3.

11

Q.4.

5) How can you tell a planet from a star in the night sky? (1)

__________________________________________________________________________________________________________________________________

Q.6. Fill in the blanks by choosing the correct word from the bracket (4)

(Mechanical, Electrical, Chemical, Sound, Heat, Light)

i) A drum Changes _________________energy into ______________ energy.

ii) A Electric heater Changes _________________energy into ______________ energy.

iii) A Light bulb Changes _________________energy into ______________ energy.

iv) Our bodies Change _________________energy into ______________ energy.

12

Q.7. a) Convert the following mass into weight (2)

i) 9.2 kg ii) 0.05 kg

b) A girl uses a rule to measure the length of a glue stick. Because the end of the rule is damaged she places one end of the rod at the 6 cm mark as shown. How long is the glue stick? (2)

a) 70mm b) 60mm c) 80 mm d) 105 mm

Q.8. A spring scale is pulled down and readings are recorded. (2)

Data table distance pulled Spring scale reading

1.0 cm 4N

1.5 cm 6N

2.0 cm 8N

2.5 cm 10N

If the spring is pulled 3.5 cm, the spring scale should read _____________N.

Q.9. A car used 200 kJ of energy in the fuel. It converted 50 kJ into kinetic energy and 150 kJ into waste heat energy. Draw a sankey diagram for the car. (2)

13

Q.10. The planets gravitational strength compared

Planet Gravitational field strength

Earth 1

Mars 0.03

If an object weight 30N on earth surface, what will be the weight on mars? Show working. (2)

Q.11. a) Give any two examples of renewable resources. (1)

_________________________________________________________________b) What is the S.I. unit of energy? (1) ___________________________________

Q.12. Give one example of each (2)

a) Gravitational potential energy _________________________________

b) Stain energy ______________________________________________

Q.13. Fill in the blanks: (2)

a) Andromeda is a type of __________________ galaxies.

b) The region in which a force acts is called a _______________.

14