Secondary School (English Medium) (5 to 8) कक्षा ८ - CBSE Question Bank Solutions for Science

State whether the following statement is ‘True’ or ‘False’.

All the stars are at the same distance from us.

State whether the following statement is ‘True’ or ‘False’.

The planets keep changing their position with respect to stars.

State whether the following statement is ‘True’ or ‘False’.

The planet Venus appears in the eastern sky before sunrise.

In the picture of rotating earth given as figure mark the position of pole star.

In the given figure out of the positions A, B, C and D which will indicate the position of the sun? Draw the sun at the appropriate position.

In figure mark the arrows (←), (→), (↓), or (↑) to show the direction of sunlight.

A star is 10 light years away from the earth. Suppose it brightens up suddenly today. After how much time shall we see this change?

Write the names of all planets in the figure.

The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is ______.

Cholera is caused by _________.

Describe how coal is formed from dead vegetation. What is this process called?

Fossil fuels are ______, ______ and ______.

Fossil fuels can be made in the laboratory.

Coke is almost pure form of carbon.

Explain why fossil fuels are exhaustible natural resources.

Describe characteristics of coke.

Make a labelled diagram of a candle flame.

Abida and Ramesh were doing an experiment in which water was to be heated in a beaker. Abida kept the beaker near the wick in the yellow part of the candle flame. Ramesh kept the beaker in the outermost part of the flame. Whose water will get heated in a shorter time?

Word game: Use the clues to work out the words.

Across

3. Protruding voice box in boys

4. Glands without ducts

7. Endocrine gland attached to brain

8. Secretion of endocrine glands

9. Pancreatic hormone

10. Female hormone

Down

1. Male hormone

2. Secretes thyroxin

3. Another term for teenage

5. Hormone reaches here through blood stream

6. Voice box

7. Term for changes at adolescence

Friction produces ______.