PHYSICS - Waves - Shadows

The video explains light as a form of radiation that travels in straight lines and can be refracted or reflected. It discusses how different materials interact with light, leading to the formation of shadows with umbra and penumbra regions. The video also covers the phenomenon of solar eclipses, emphasizing the importance of not looking directly at them to avoid eye damage.

Which of the following materials allows all light to pass through?

• Reflective

• Transparent

• Translucent

• Opaque

What is the darkest part of a shadow called?

• Penumbra

• Umbra

• Core

• Shade

How does the size of a shadow change if the light source is moved closer to the object?

• The shadow remains the same size

• The shadow becomes larger

• The shadow becomes smaller

• The shadow disappears

During a solar eclipse, what blocks the sunlight from reaching the Earth?

• The Earth

• The Sun

• The Moon

• The Stars

What should you avoid doing during a solar eclipse to protect your eyesight?

• Using a telescope

• Standing in the umbra

• Looking directly at the eclipse

• Watching it on TV