Thermal Effects on Water Droplets

Thermal Effects on Water Droplets

Assessment

Interactive Video

Physics, Science

5th - 8th Grade

Hard

Created by

Amelia Wright

FREE Resource

The video tutorial introduces the chapter on air, winds, and cyclones, focusing on an activity to demonstrate air expansion and contraction. The activity involves using an injection bottle, rubber, and refill to observe changes in a water droplet when the bottle is warmed by hand and then cooled in water. The experiment shows that air expands when heated, inflating the water droplet, and contracts when cooled, causing the droplet to shrink.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main objective of the activity discussed in the video?

To check if air changes color on heating

To see if water evaporates on heating

To determine if air expands on heating

To find out if air contracts on heating

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a material required for the activity?

An empty injection bottle

An empty ballpoint pen refill

A thermometer

A one-hole rubber

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you do to warm your hands before holding the injection bottle?

Place them in your pockets

Hold them over a flame

Wash them with hot water

Rub them together

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the water droplet when the injection bottle is held in warmed hands?

It changes color

It inflates

It contracts

It evaporates

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where should you place the injection bottle to observe the contraction of the water droplet?

In a bowl of hot water

In direct sunlight

In a saucer of cold water

In a refrigerator

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What causes the water droplet to inflate when the bottle is warmed?

The air inside the bottle contracts

The air inside the bottle expands

The water inside the bottle evaporates

The bottle material expands

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final observation when the injection bottle is placed in cold water?

The water droplet inflates

The water droplet contracts

The water droplet evaporates

The water droplet changes color