Podcast
Questions and Answers
What are luminous objects?
What are luminous objects?
Luminous objects are those objects that emit light on their own.
Give two examples of natural sources of light and artificial sources of light.
Give two examples of natural sources of light and artificial sources of light.
Natural sources of light: the Sun and stars. Artificial sources of light: electric bulbs and torches.
Give two examples of luminous and non-luminous objects.
Give two examples of luminous and non-luminous objects.
Luminous objects: Flame of the candle, tube light (on). Non-luminous objects: Wall, tube light (off).
What are the three types of materials based on their ability to let light pass through?
What are the three types of materials based on their ability to let light pass through?
How does light travel through different materials?
How does light travel through different materials?
What are the different sources of light mentioned in the text?
What are the different sources of light mentioned in the text?
What is the process explained under 'Understanding:shadows'?
What is the process explained under 'Understanding:shadows'?
What are the different forms of energy mentioned in the text?
What are the different forms of energy mentioned in the text?
What is the topic discussed in the text under the heading 'Let's Recap'?
What is the topic discussed in the text under the heading 'Let's Recap'?
What is the lesson goal mentioned at the beginning of the text?
What is the lesson goal mentioned at the beginning of the text?
Match the sources of light with their categories:
Match the sources of light with their categories:
Match the objects with their categories:
Match the objects with their categories:
Match the materials with their types based on their ability to let light pass through:
Match the materials with their types based on their ability to let light pass through:
Match the natural sources of light with their examples:
Match the natural sources of light with their examples:
Match the artificial sources of light with their examples:
Match the artificial sources of light with their examples:
Match the following sources of energy with their examples:
Match the following sources of energy with their examples:
Match the following activities with the type of energy required for them:
Match the following activities with the type of energy required for them:
Match the following objects with the type of energy they use:
Match the following objects with the type of energy they use:
Match the following statements with the correct example of natural and artificial sources of light:
Match the following statements with the correct example of natural and artificial sources of light:
Match the following actions with their corresponding requirements:
Match the following actions with their corresponding requirements: