Answered

ming
me
tudents
will be
able to
plain the
ationshi
between
mperatur
and rate
of
aporatio
Take 100 ml water in five identical
household utensils and place each of them
separately in the locations given below.
Under a fan, under the bed, in a balcony
with sunlight, in an almirah or cupboard
Note down two sets of observations:
a) After one hour in each of the conditions,
measure the water remaining in the utensils
to give you a rough estimate of the rate of
evaporation.
b) Measure the time taken for each utensil
to run out of water entirely through
evaporation (in hours and minutes) Present
this tabulated data of the rough estimate and
a final figure through any one visual
medium of your choice (ie. Pie chart, bar
graph, histogram etc.) on separate sheets.
T7]



Answer :

GinnyAnswer
Sure, I'd be happy to explain the relationship between temperature and the rate of evaporation using the experiment you described. Here is a step-by-step solution to your question:

### Step 1: Prepare the Experiment
1. Materials Required:
- 5 identical household utensils
- 500 ml of water (100 ml for each utensil)
- Measuring cylinder
- Stopwatch or timer
- Notebook and pen for recording observations

2. Initial Setup:
- Pour 100 ml of water into each of the five utensils.
- Place each utensil in a different environment:
- Under a fan
- Under the bed
- In a balcony with sunlight
- In an almirah or cupboard
- A neutral reference point for control (e.g., room temperature not influenced by the above conditions.)

### Step 2: Measure Water Remaining After One Hour
1. Set a timer for one hour.
2. After one hour, measure and record the remaining water in each utensil.

#### Hypothetical Observations (in ml):
- Under a fan: 90 ml
- Under the bed: 95 ml
- In a balcony with sunlight: 80 ml
- In an almirah or cupboard: 97 ml
- Reference point: 93 ml

### Step 3: Total Time for Complete Evaporation
1. Start a timer and note down the time when each utensil runs out of water completely.

#### Hypothetical Observations (in hours):
- Under a fan: 24 hours
- Under the bed: 48 hours
- In a balcony with sunlight: 12 hours
- In an almirah or cupboard: 72 hours
- Reference point: 36 hours

### Step 4: Organize Data in Tabular Form

| Condition | Water Remaining After 1 Hour (ml) | Time for Complete Evaporation (hours) |
|------------------------------|-----------------------------------|--------------------------------------|
| Under a fan | 90 | 24 |
| Under the bed | 95 | 48 |
| In a balcony with sunlight | 80 | 12 |
| In an almirah or cupboard | 97 | 72 |
| Reference point | 93 | 36 |

### Step 5: Visual Representation
#### Bar Graph: Rate of Evaporation After One Hour
- Create a bar graph to show how much water has evaporated after one hour in each condition.

X-axis: Different conditions \
Y-axis: Water evaporated (100 ml - remaining water in ml)

#### Bar Graph: Total Time for Complete Evaporation
- Create another bar graph to represent the total time taken for complete evaporation in each condition.

X-axis: Different conditions \
Y-axis: Time taken for complete evaporation (hours)

### Analysis
The data suggests:
- Faster Evaporation: Balcony with sunlight (80 ml remaining after one hour, complete evaporation in 12 hours) due to direct sunlight and potentially higher temperature.
- Slower Evaporation: In an almirah or cupboard (97 ml remaining after one hour, complete evaporation in 72 hours) due to lack of airflow and lower temperature.
- Moderate Evaporation: Under a fan (24 hours), under the bed (48 hours), and room temperature (reference point) (36 hours).

### Conclusion
- Higher temperatures (balcony with sunlight) and increased airflow (under a fan) result in a faster rate of evaporation.
- Cooler and still air environments (under the bed, in an almirah) slow down the rate of evaporation.
- This experiment illustrates the relationship between temperature, airflow, and the rate of evaporation, demonstrating that higher temperatures and better air circulation increase the rate of evaporation.