Solution. Experiment to demonstrate hydrotropism. 1. Take a clay pot, fill it partially with water and place it in the soil. 2. Now put some germinating seeds in the soil. 3. After one or two days you will observe that the roots of all the germinating seeds will grow towards the clay pot. 4.

Mount the bimetal switch on the heat bar at Notch 1. Also mount the platinum probe in the transducer mount immediately adjacent to the bimetal switch. Switch on the power and take a reading of the probe temperature. The meter monitoring the operation of the auxiliary heater circuit should indicate about +12.5V showing that the heater is ON.

The Soviet Sleep Experiment: Directed by Barry Andersson. With Eva De Dominici, Rafal Zawierucha, Chris Kattan, Michael Villar. In the late 1940s, Russian researchers kept four test patients awake for thirty days using an experimental gas-based stimulant. The researchers were cut off from the world and asked to do a series of tests on the subjects.

Use a vernier caliper to make measurements to the nearest 1/10 of a millimeter. Use a micrometer to make measurements nearest 10-6 meters using a micrometer. Use an electric scale to measure mass to the nearest 1/100 of a gram. Use a pendulum to measure the acceleration due to gravity. Introduction

Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.

Sound and water waves are mechanical waves; meaning, they require a medium to travel through. The medium may be a solid, a liquid, or a gas, and the speed of the wave depends on the material properties of the medium through which it is traveling.

Best answer Take two small beakers and label them as A and B. Fill beaker A with water. Now make a cylindrical-shaped roll from a filter paper and keep it as a bridge between beaker A and beaker B, as shown in the figure. Attach few germinating seeds in the middle of the filter paper bridge.