THE HUMAN BODY (THE FEEDING SYSTEM) The human body is a living body that can feed and breathe. It produces waste materials as a result of its work. It sends out these waste materials. There are special parts of the body which perform these duties. Each one is called a system. You say something is ….  Read More

Content : WHAT IS EROSION ? Erosion means the washing away and carrying off the top soil on  the surface of the earth by water and wind. CAUSES OF EROSION There are two main causes of erosion.They are :                        (i) water,in the form of rain and ice glacier (ii) wind EFFECTS  OF EROSION Erosion makes ….  Read More

 POLLUTION Our environment is our surroundings.It consists of the living(biotic)  and non living(abiotic) elements of our surroundings. POLLUTION means making the environment unsafe for plants and animals. POLLUTANTS are substances that are capable of contaminating the environment.Pollutants can be in their solid, liquid and gaseous forms.                  TYPES OF POLLUTION There are three major types ….  Read More

CAUSES OF LAND POLLUTION Indiscriminate waste dumping Bush burning Dumping of human faeces, dead animals etc CAUSES OF WATER POLLUTION Untreated sewages released into water bodies Dumping of human faeces and dead animals into water bodies Oil spillage, leakages from oil tanks into stream CAUSES OF AIR POLLUTION Smoke from bush burning or burning of ….  Read More

CONTROL OF EROSION The following measures helps control erosion Afforestation i.e planting of trees help to control erosion Formulation and implementation of land use policies Control of waste disposal Wind break i.e planting trees in rows does control the speed of wind

WHAT IS WASTE? Waste is refuse or garbage.It can be pollutant or an agent of pollution in our environment.Waste should be disposed neatly to ensure a healthy environment. Waste is considered in three categories namely:liquid,gaseous and solid.                  TYPES OF WASTE There are two major types of waste, namely: (i).Refuse :This is the solid form ….  Read More

METHODS OF WASTE DISPOSAL Waste disposal is the removal of waste from our environment. Sewage disposal: the use of pitlatrine and water closet Cesspool: this is covered underground container for the temporary Dustbin: this is first used to collect the refuse before the proper disposal Septic tank : this is an underground tank in which ….  Read More

PARTS OF A FLOWER The reproduction organ in a flowering plant is the flower. Parts of a flower    is  divided into two The male part ——the stamen (consist of anther and filament) The female part ——— the pistil (consist of stigma,style and ovary)   Sepals : Protect the floral parts in the bud Petals : ….  Read More

                           WHAT IS POLLINATION Pollination is the transfer of pollen (yellow dust) from the anther to the stigma(sticky section) of flower. We have two types of pollination Self pollination : This is a type of pollination in which pollen grains from a flower are transferred to the stigma of the same flower Cross pollination : ….  Read More

Content : WHAT IS ROCK Rocks are hard inorganic substances formed by heat or pressure in the earth or by the action of water.       TYPES OF ROCKS Igneous rock : These rocks are formed when molten materials inside the earth forcefully erupt to the earth surface.This takes place during volcanic eruption.Examples are basalt and ….  Read More

The washing away and carrying off of the top soil on the surface of the earth is called_________ (a) Pollution (b) erosion (c) reproduction (d) hematology The transfer of pollen grains from the anther to the stigma is known as ________ (a) Fertilization (b) pollination (c) union (d) growth ___________are substances that are capable of ….  Read More

–CLASSIFICATION OF ROCKS Rocks are classified and identify on the following bases Age Texture Constituents(their make-up colour) The level and degree of resistance to weather condition

____________is treating waste materials and substances with the purpose of using them again   (a) remediation (b) recycling (c) post treatment (d) rebuilding One of the following is not a base (a) ascorbic acid (b) ammonium hydroxide (c) magnesium hydroxide (d) slaked lime Which of the following is not among the female part of a flower ….  Read More

EASTER TERM EXAMINATION 2020/2021 CLASS: GRADE 4 SUBJECT: SCIENCE NAME:…………………………………………………………………… OBJECTIVES The washing away and carrying off of the top soil on the surface of the earth is called_________ (a) Pollution (b) erosion (c) reproduction (d) hematology The transfer of pollen grains from the anther to the stigma is known as ________ (a) Fertilization (b) ….  Read More