Answer in one line

Prepared by: learnloophq@gmail.com

Last edited 26 days ago by Learn LoopHQ.

Chapter: 06. Light

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B) Answer in one line

What is the main source of light during the day?

What is the primary benefit of LED bulbs over CFLs in terms of environmental impact?

Why does a transparent object cast no shadow?

On which specific moon phase does a lunar eclipse occur?

What is the ratio of the size of the image to that of the object known as?

Explain why the color of an opaque object does not affect the color of its shadow.

What is the main health risk associated with mercury vapour emitted from broken CFLs?

How does increasing the distance between the object and the pinhole affect the image size?

Why do we usually not see the shadow of a flying kite or bird on the ground?

What is the alignment of the Sun, Earth, and Moon during a lunar eclipse?

What is the purpose of blackening the inside of a pinhole camera during its construction?

What specific condition must be met for a total lunar eclipse to occur, regarding the Moon’s position in Earth’s shadow?

Give one real-world observation that demonstrates rectilinear propagation of light.

What term describes an image that can be viewed but cannot be obtained on a screen?

What are the three necessary conditions for the formation of a shadow?

How can a non-luminous object like an iron rod be made luminous temporarily?

When is a shadow shortest during the day?

Why does a bigger pinhole lead to a blurred image in a pinhole camera?

Briefly explain why a solar eclipse should not be viewed directly with naked eyes.

Does the shape of the pinhole affect the image formed by a pinhole camera?

What is an eclipse in terms of natural shadows?

What is the difference between transparent and opaque objects regarding light passage?

Why might the Moon appear as a dull red disc even during a total lunar eclipse?

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