Lower Secondary Science

Science vocabulary Cell Basic building blocks of organisms Cell membrane External boundary of a cell that separates the cell from its external environment Cell wall Thick layer surrounding the cell membrane of a plant cell Chloroplasts Organelles in green plant cells that contain the pigment chlorophyll which are responsible in absorbing light energy to make … Read more

1. What you need to remember Mass is defined as the amount of substance in a body. Hence, it remains unchanged no matter where you bring the body to. Weight arises from the gravitational force acting on the object. Hence, object’s weight will change depending on its location. E.g A water melon that weighs 50 … Read more