Sources and Properties of Light

In this science class, students are introduced to Unit 4, focusing on light sources. The lesson explains what light sources are, their importance, and how they enable visibility. Students learn to identify various light sources, such as the sun, candles, and lamps, and understand the concept of reflection, which allows us to see objects. The class includes an activity to identify light sources in images and concludes with a homework assignment.

What is the main topic of the new unit introduced in the science class?

• Electricity and Magnetism

• Plant Growth

• Light and Dark

• Water Cycle

Which of the following is a natural source of light?

• Moon

• Sun

• Mirror

• Glass

Which object in the picture is NOT a source of light?

• Candle

• Sun

• Moon

• Torch

What is the role of the Moon in terms of light?

• It reflects sunlight

• It generates its own light

• It absorbs light

• It blocks sunlight

What happens when sunlight reflects off an apple?

• The apple becomes invisible

• The apple generates its own light

• The apple becomes visible

• The apple changes color

Which of the following is an example of reflection?

• A candle burning

• A lamp glowing

• A torch lighting up a room

• Sunlight bouncing off the Moon

In the activity book, which item is NOT a source of light?

• Moon

• Torch

• Flame

• Lamp

Which of the following is a man-made source of light?

• Star

• Sun

• Moon

• Lamp

What is the primary function of a torch?

• To block light

• To produce light

• To absorb light

• To reflect light

Which of these words is associated with the concept of reflection?

• Emit

• Reflect

• Generate

• Absorb