Junior Certificate

Ecology – Junior Cert Science

Ecology is the study of the relationships of living things with one another and their environment. A habitat is a place where a plant or animal lives, e.g. woodland or rocky seashore. The environment is everything surrounding an organism. A food chain is a chain showing how organisms are linked… Continue Reading →

States of Matter and Separation Techniques

Matter is anything which has mass and takes up space. There are three states of matter, solid, liquid, and gas. Solid – definite shape, definite volume, does not flow. Particles vibrate only. Liquid – no definite shape, definite volume, can flow. Particles slide over each other. Gas – no shape, no definite volume, can be compressed…. Continue Reading →

Points on Photosynthesis – Junior Cert Science

Photosynthesis Green plants make food by photosynthesis. Photosynthesis occurs in the leaves of a plant. The green chemical chlorophyll is needed for photosynthesis. Chlorophyll traps light energy and uses it to combine carbon dioxide and water. This forms glucose and oxygen. Leaves have air spaces between their leaves called stomata. The three things needed for… Continue Reading →

Effects of High Population Densities of a Developing City

1. Statement:Overcrowding Development:  Kolkata is one of the most densely populated cities, there are about 4 million people crammed into over-crowded bustees. Some of these bustee families live in tiny overcrowded houses. These houses are no bigger than an average sized Irish bathroom. Further Development:  An awful amount of people… Continue Reading →

Digestions & Enzymes – JC Science Notes

Digestion The five stages of digestion are ingestion, digestion, absorpbtion, assimilation and egestion. Ingestion is the taking of food into the mouth. Digestion is the breaking down of food. Absorpbtion is the absorpbtion of molecules of food into the blood in the small intestine. Assimilation is the taking of food molecules from… Continue Reading →