The small droplet of water that forms on the grass in the early hours of the morning is

Analyze the question: The question asks for the name of the small water droplets that form on grass in the early morning.

Explain the concept: During the night, the ground and objects such as grass lose heat by radiation and cool down. The air in contact with the cool grass also cools. When its temperature falls to the dew point, the air becomes saturated. The excess water vapour then condenses into tiny liquid droplets on the surface of the grass.

Go through the options:

• A. Hail: These are lumps of ice that fall from clouds during thunderstorms. They are not droplets, and they do not form on grass.
• B. Dew: This is water vapour condensing on cool surfaces such as grass and leaves, usually at night or in the early morning. It matches the description.
• C. Fog: This is a cloud of tiny water droplets suspended in the air near the ground, with visibility below 1 km. It forms in the air and not on the grass.
• D. Mist: This is similar to fog but thinner, with visibility above 1 km. It is also suspended in the air.

Answer: The droplets that form on the grass in the early morning are dew, which is option B.

Tip: Remember that dew is deposited on surfaces, while fog and mist float in the air. If a question mentions grass, leaves, or windows, think dew. Also remember that dew forms when a surface cools to the dew point.