middle school science activities

Respiration is an important process in nature. It is a process by which the solar energy trapped by the plants in the food can be utilised. The organic compounds are broken down to release energy. This energy is in the form of ATP molecules and is made available for all the vital activities..

Question: The movement of particles from the region of their higher concentration to the region of their lower concentration is called as ________________. 1. osmosis 2. diffusion 3. active transport 4. ascent of sap Answer: ..

Summary - Nutrition can be defined as the process by which an organism obtains food that is used to provide energy and materials for its life sustaining activities There are basically two modes of nutrition: - Autotrophic - Heterotrophic Autotrophic Nutrition Organisms which synthesize th..

(EEG) An instrument called electro encephalograph can record electrical activity of brain. The activity of the brain is recorded as electric potentials. Such a record is called electro encephalogram (EEG). By placing two electrodes on the scalp and leading via suitable amplifier..

Stretch the forefinger, the middle finger and the thumb of the right hand, such that they are mutually perpendicular to each other. If forefinger indicates the direction of the magnetic field, the thumb indicates the direction of motion of the conductor, then, middle finger ind..

You must have seen middle aged people holding a book away from their eyes to read properl..

An optimum temperature ranging from 25 o C to 35 o C is required for a good rate. At temperatures around 0 o C the enzymes stop working and at very high temperatures the enzymes are denatured. Since both the stages of photosynthesis require enzyme activity, the temperature has an affect ..

Nervous Control in Human Beings - Nervous System - The nervous system carries out the following functions: It perceives the changes around us through our senses It controls and coordinates all the activities of the muscles in response to the changes outside It also maintains the internal ..

Let m be the mass of a body on Earth. Its weight on Earth is given by the equati..

Two Bodies of Mass m Separated by a Distance 2d ..