English 8 Read-a-thon

The principle of focusing the sun rays is used in:

• Solar cooker

• Pressure cooker

• Inverter

• None of the above

The dim part of the crescent moon is lit by:

• sunlight

• satellite

• stars light

• earth light

The earth reflects _________ of the radiation received from the sun.

• about one-fourth

• about three-fourth

• about two-third

• about half

The word ‘crescent’ means______________

• demilune

• spherical

• joyous

• bright

Complete the sentence with correct words from the passage: 1. Reflection of snow scattered back toward the surface by________

• aerosols

• molecules

• radiation

• light

Complete the sentence with correct words from the passage: 2. Mountaineers wear _________ while climbing mountains.

• dark glasses

• sunglasses

• goggles

• helmets

Why the mountaineers need to use dark glasses?

• To keep their eyes warm in cold weather.
• To improve their night vision while climbing.
• To enhance their vision in low light conditions.
• To protect their eyes from UV rays and glare.

Why fresh snow is the best reflector of sunlight in nature?

• Fresh snow is the best reflector of sunlight due to its high albedo and crystalline structure.
• Fresh snow is a poor insulator, allowing heat to escape.
• Fresh snow absorbs sunlight due to its dark color.
• Fresh snow melts quickly, reducing its reflective properties.

A full moon shining overhead is a

beautiful sight. But it is also a puzzle, because if the sun and the moon both give the

same light, then why is the moonlight more pleasant?

Because_________________________.