Light and Shadows Quiz - ICSE Class 5 Science
Free practice quiz: Light and Shadows (ICSE Class 5 Science). 38 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
Play all 38 questions freeSample questions
Which of the following materials will cast the darkest shadow?
- A piece of transparent glass
- A sheet of tracing paper
- A thin piece of black cardboard
- A thin sheet of mica
Show answer
Answer: C. A thin piece of black cardboard
Opaque objects block light completely, casting dark shadows. Transparent objects allow most light to pass through, casting faint shadows or no shadows at all. Translucent objects allow some light to pass through, casting blurry or faint shadows. Black cardboard is opaque and will block the most light.
Which of the following is NOT a requirement for shadow formation?
- A light source
- An opaque object
- A screen or surface to cast the shadow upon
- A vacuum
Show answer
Answer: D. A vacuum
While light travels through a vacuum, a vacuum itself is not a requirement for shadow formation. The essential components are a light source, an opaque object to block the light, and a surface to receive the shadow.
Which of the following is an example of an opaque object?
- A clear glass window
- A magnifying glass
- A book
- A thin sheet of wax paper
Show answer
Answer: C. A book
Opaque objects do not allow light to pass through them. A clear glass window is transparent, a magnifying glass is transparent, and wax paper is translucent.
A translucent object, when placed in the path of light, will cast a shadow that is:
- Completely dark and sharp
- Faint and blurry
- Non-existent
- Twice the size of the object
Show answer
Answer: B. Faint and blurry
Translucent objects allow some light to pass through, but they scatter it. This scattering results in a shadow that is not completely dark and has blurred edges.
Which of the following objects, when placed in the path of light, would allow you to see the light source through it, but the light would be scattered?
- A polished mirror
- A clear piece of glass
- A piece of tracing paper
- A metal sheet
Show answer
Answer: C. A piece of tracing paper
Tracing paper is translucent. It allows light to pass through, but it scatters the light rays, making objects behind it appear blurry. Clear glass is transparent, a mirror is reflective, and a metal sheet is opaque.