Author name: mekhalaschool

Pythagoras Theorem Statement Pythagoras theorem states that “In a right-angled triangle,  the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named as Perpendicular, Base and Hypotenuse. Here, the hypotenuse is the longest side, as it is opposite to the angle 90°. The

Probability is defined as the likelihood or chance that an event will occur. It is defined as thenumerical method of measuring uncertainty involved in a situation. To understand and measurethe chance, we perform the experiments like tossing a coin, rolling a die and spinning thespinner etc. Terms related to Probability:  Sample space: It is

Triangle Triangle is a closed curve made up of three line segments. It has three vertices, sides and angles. Here, in ∆ABC, AB, BC and CA are the three sides. A, B and C are three vertices. ∠A, ∠B and ∠C are the three angles. Types of Triangle on the basis of sides Types of Triangle

Revision Notes on Weather, Climate and Adaptations of Animals to Climate Weather The weather of a place can be defined as the measure of its daily atmospheric conditions such as humidity, temperature, lightning events, rainfall Storms, snow and so on. Different elements of weather are: Rainfall Temperature Humidity Snowfall Storms Winds etc. Figure 1: Different types of Weather

Importance of Soil Soil allows the growth of plants. It supplies water and nutrients that are required in the growth of plants. The soil is the main part of agriculture. Different types of soils support different kinds of crops. Without agriculture, food, shelter and clothing are not possible. Many microorganisms live in the soil. Underground

What are Rocks? Rocks are mineral aggregates with a combination of properties of all the mineral traces. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe rock types. Additionally, different classification systems exist for each major type of rock. There are different types of rocks existing in nature.

What is Global Warming? Earth absorbs about 75 % of the total solar energy reaching its surface thereby increasing its temperature. Some of this energy is radiated back into the atmosphere. The gases present in the atmosphere for example ozone, methane, carbon dioxide, water vapour and chlorofluorocarbons are called greenhouse gases, they absorb some heat

Composition of the atmosphere The atmosphere is made up of different gases, water vapour and dust particles. The composition of the atmosphere is not static and it changes according to the time and place. Gases of the atmosphere The structure of the atmosphere is represented in a pictorial form below: There are five layers in

Living organisms adapt to their moves and positions in response to the environmental changes for their protection or to their advantage. When an entity reacts to the changes in its surroundings, it is referred to as stimulus while the reaction to the stimulus is referred to as a response. Common stimuli are sound, light, air,