The CitySchool

PECHS Junior boys

End of the Topic Test# 3

Science (Level: 6)

Name: ______Section:______Date:______Max. Marks: [20]

Q1. Encircle the correct answers. [05]

i)Shadows are formed because ______

  1. Light travels in straight lines.
  2. Light formed a dark patch behind an object.
  3. Light is not there and its complete dark..

ii)Moon is a ______body.

  1. Luminous
  2. No-luminous
  3. None of the above.

iii)Lightning is the ______source of light.

  1. Man made
  2. Natural
  3. Source of light which runs on electricity.

iv)We can see a star when light from it ______into our eyes.

  1. enter
  2. reflect
  3. bounce

v)Reflection of the light is the ______of light off a surface.

  1. Returning
  2. Bouncing
  3. Absorption

Q2.Guess who am I. [1.5]

  1. I let most of the light pass through me. ______
  2. I let some of the light pass through me. ______
  3. I do not let the light pass through me.______

Q3.Identify the following as an ‘image’ and ‘shadow’[01]

  1. ______b. ______

Q4. Fill in the banks.[4]

i)Shadows grow bigger when the source of light is brought ______to the object.

ii)Angle of incident is ______to angle of reflection in regular reflection.

iii)We are able to see non-luminous bodies because of ______.

iv)______surfaces produce regular reflection which causes glare in our eyes.

Q5a. Identify the phenomenon in the given picture.[01]

______

b) What are the two requirements for the happening of above phenomenon? [01]

i) ______ii) ______

Q6. Ali uses a bent water hose to look at the torch light.

  1. Do you think he would be able to see the

torch light at the other end? ______[0.5]

  1. Why do you think he can/can’t see through it? [01]

______

  1. What If he uses straight water hose rather than the bent one? [01]

______

Q7. Give reason as to why; [02]

  1. Moon appears bright at night?

______

  1. Some deep sea fish have big round eyes?

______

Q8. An object can cast a shadow of different shapes and sizes. For example a mug given below can

cast both the shadows shown. What do you think are the two factors that brought changes in the

shapes and sizes of shadow.[02]

i)

ii)