Free Printable Physics and Bio Test Narada Grade 7

1.

A shopkeeper wants to keep an eye on his store in order to prevent shoplifting. What could the shopkeeper hang on the wall in order to see a wider image of his store and his customers?

(a) Which mirror are suitable for this condition?

(b) The image formed by its mirror is upright. Mention one another properties of the mirror.

(c) Which light properties are explained by the using of mirror?

4 lines

2.

Type of mirror used as a side mirror on a vehicle to provide a wide angle view so we can view behind the vehicle condition clearly.

(a) Which properties of light are needed by use this mirror

(b) What type of mirror are used?

4 lines

3.

Look at the figure. Some light travels from air and enter the glass, and then exit to the air again. In this figured explain that light bends when it enter the glass.

(a) What kind of light properties can be explained by the figure?

(b) What factor are can make this condition

(c) Using your answer in (b), which surface that have a greatest factor explained

4 lines

4.

There are some material that entered by light: Material A, material B, and material C. They are arranging so Material B put between material A and material C. Material put on the top on all material.

Light enters with incidence angle 50 in material A, and then enter material B with the angle smaller when enter material B and it be wider angle at material C than A when enter it

(a) Which material are denser? Explain

(b) Arrange the material from the smallest density

(c) Draw a figure based on the explanation on the question.

4 lines

5.

Some people cannot seen any color difference. Its called color blind.

(a) Explain which part of eyes that caused this condition?

(b) Mention and explain shortly about all type of color blind.

4 lines

6.

(a)What is the value of the unknown angle (theta) in the following diagram?

(b)Which name of angle are labelled by 30 degrees and theta?

4 lines

7.

(a) What is white light?

(b) What is the main colour?

(c) Why we can see the green object? Explain with the light properties occured in this condition

(d) Explain which colour are produced by mixing red and blue

(e) Which colour that have a greater wavelength?

4 lines

8.

(a) What light properties are explained by the figure?

(b)Why is red light is at the top whileviolet at the bottom of the spectrum?

(c) give two example in our daily life about these phenomenon

4 lines

9.

(a) What kind of the mirror in the figure?

(b) what is F and C means?

(c) Draw a light travel in the figure by the light principal in mirror

4 lines

10.

(a) What kind of the mirror in the figure?

(b) what is F and C means?

(c) Draw a light travel in the figure by the light principal in mirror

4 lines

11.

Look at the food web and answer these question.

(a) Which is a producers in the food web?

(b) Which is a highest consument in the food web?

(c) What effect in the food web when frog are disappear? (explain it with 3 point)

(d) Write down 3 food chain by the condition of the food web, include Hawk as a final consumer

4 lines

12.

Several bad condition in our earth is given by human activity. Exolain shortly why these condition happened.

(a) Acid Rain

(b) Melting of Ice

4 lines

13.

Which of the following is a physical adaptation for the underlined animal?

a)

A snake unhinges its jaw to eat a rabbit it just caught.

b)

A hognose snake rolls over, slows its breathing, and hangs its tongue out to pretend to be dead.

c)

A herd of buffalo encircle their young to protect them from a pack of wolves.

d)

A dung beetle rolls a piece of dung across the desert.

14.

A scientist puts 100 houseflies in a sealed container; then sprays an insecticide into the container. Ninety-six of the flies die. Four survive. The scientist lets the survivors mate and produce offspring, then repeats the experiment with 100 offspring. Fifty-six of them survive the spray. This experimental result is evidence of –

a)

adaptive radiation

b)

speciation

c)

natural selection

d)

extinction

15.

How do adaptations help animals?

a)

To escape animals

b)

to hunt for food

c)

to survive in their habitats

d)

All of these are correct

16.

Look at the figure

(a) What kind of living environment explained on the figure.

(b) Which part of abiotic things on the figure?

(c) Which part of biotic things on the figure?

(d) Some living things can make some interaction between them to survive. What is the name of these interaction

4 lines

Physics and Bio Test Narada Grade 7

Total questions: 16

Worksheet time: 32mins

Similar Resources on Wayground