General Science Worksheet-8

General Science Worksheet-8

1. Manish tried to see if he could produce different sounds with a guitar. The table below shows some of the things he did and the result.

What did Manish's experiment show about how sound can be produced?

A. The same sounds can be produced in different ways

B. Different sounds can be produced by doing the same actions

C. Different sounds can be produced by doing different actions

D. None of these.

2. Which of these does not show reflex action?

A. Sunflower     B. Cat                 C. Wood             D. Venus flytrap

3. Plants get carbon dioxide from the ___.

A. soil                 B. sand               C. leaves             D. air

4. Terrycot is a blend of _____.

A. Terylene + wool                       B. Terylene + cotton

C. Terylene + silk                         D. Polyester + cotton

5. Silk clothes are prepared from ____.

A. Silk flies        B. Flax                C. Sheep             D. Silkworms

6. Which part of a cotton plant is used to obtain fibres?

A. Roots                                          B. Branches and leaves

C. Stem                                           D. Bolls of flowers

7. Written messages can be communicated instantly by ____.

A. A pager                                      B. A fax machine

C. A mobile phone                        D. Both A and B

8. Evaporation increases with ____.

A. Increase in the amount of water

B. Decrease in the temperature

C. Decrease in the area of exposure

D. Increase in the area of exposure

9. Germs present in tap water can be killed by ____.

A. Filtration                                  B. Condensation

C. Boiling                                       D. Decantation

10. Frozen dew is called ____.

A. Frost              B. Rain               C. Hail                D. Water

Answer Key:

(1)–C; (2)–C; (3)–D; (4)–B; (5)–D; (6)–D; (7)–B; (8)–D; (9)–C; (10)–A