middle school science activities

Question: Minerals are absorbed into the cells by _____________. 1. osmosis 2. diffusion 3. active transport 4. a, b or c Answer: ..

Working of an Eye - The light coming from an object enters the eye through cornea and pupil. The eye lens converges these light rays to form a real, inverted and diminished image on the retina. The light sensitive cells of the retina gets activated with the incidence of light and generate..

Significance of Respiration - 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 al..

Extend the thumb, forefinger, and the middle finger of the left hand in such a way that all the three are mutually perpendicular to each another. If the forefinger points in the direction of the magnetic field and the middle finger in the direction of the current, then, the thu..

It is made up of three lobes - anterior, middle and posterior. They secrete hormones in response to the secretion of neurohormones by the hypothalamu..

They are meant to protect and conserve particular species of wildlife. They are not bound by state legislation. Killing, hunting or capturing of any animal species is prohibited. Forestry and other activities such as grazing of domestic animals are permitted as long as these activites do..

Soil - Soil can be defined as the uppermost crust of earth mixed with organic material and in which animals and microorganisms live, and plants grow. The word soil is derived from a Latin word solum meaning ground. It is a stratified mixture of inorganic and organic materials, both of which are pro..

Two Bodies of Mass m Separated by a Distance ..

Mass of the dog (m) = 20 kg Velocity (v) = 12 m/s Kinetic energy of the dog = 144..

From equations (1) and (2) The first equation of motion is v = u + at. Substituting the value of v in equation (3), we get ..