1.13 Lab: Temperature of Water and Soil, science homework help

LEARN

Activity 2: Temperature of Water and Soil 1 (ONLINE)

Instructions

Procedure
Climate and weather depend on a variety of factors. One is the unequal heating of earth’s surface. Earth’s surface is unevenly heated due to

• differences in the concentration of heat energy on the surface
• differences in surfaces (for example, pavement, soil, grasslands, water, etc.)

In this laboratory experiment, you will determine how the temperatures of water and soil vary.

Part 1: Form Your Hypothesis
Climate is affected by differences in the temperatures of soil and water. Write a hypothesis that describes how temperature varies with soil and water. Write the hypothesis on your Lab Report.

Part 2: Test Your Hypothesis

1. Fill one container three-quarters full with potting soil. Leave the soil loosely packed. Tap the container gently on the table so that the soil settles.
2. Fill the other container three-quarters full with water.
3. Place both containers on a flat surface.
4. Place a thermometer in each container. Make sure that each thermometer is covered by no more than 0.5 cm of water or soil.
5. Read the temperature of each thermometer. Record this in the data table on the Lab Report.
6. Place the heat lamp 25 cm above the containers. Turn on the lamp.
7. Measure and record the temperature in both containers at intervals of 1, 3, 5, and 10 minutes.
8. Turn off the lamp. Allow the soil and water to cool down.
9. Measure and record the temperatures of the soil and water 5 minutes after turning off the lamp. Repeat at 10 minutes.