Learningismypassion

                     FOOD CHAIN A food chain shows the flow of energy from one living organism to another. A food chain has PRODUCERS AND CONSUMERS CONSUMERS can be again classified into: a. Primary Consumers : Organisms that eat the producers  are called primary consumers.    They are usually herbivores. b. Secondary consumers : Organisms that eat primary consumers are called Secondary consumers. c. Tertiary Consumers : Organisms that eat secondary consumers are called Tertiary Consumers. The amount of energy transfered from one level to another decreases because energy is lost in the form of heat at each level.

                          ALLOYS The meaning of the term 'alloy' is  a substance formed from the combination of two or more metals . PROPERTIES OF ALLOY Alloys are  stronger, harder, more durable, and sometimes more corrosion-resistant than their pure metal. Corrosion resistant  Corrosion resistance can be defined as  the ability to protect the substrate from corrosion .

  CONSTRUCTING A DICHOTOMOUS KEY Step1: Think of a way you can split the organisms into two groups like its has legs or not etc. Step 2: According to the answers branch the key into two, again ask another question to identify another organism. Step 3: Continue till you identify all the organisms. Look at the given organisms and construct a dichotomous key by mutually discussing with your group members.

                                                          GROUP 1 PROPERTIES OF METAL PROPERTY NAME METALS Examples  Pictures SHINY Most metals are shiny   Gold, silver, iron Aluminium MALLEABLE Metals can be hammered or beaten to make different shapes. Gold, Iron, steel DUCTILE They can be drawn into wires Copper, Gold,Iron, steel     CONDUCTS ELECTRICITY Metals are good conductors of electricity Allows electricity to pass through it.     CONDUCTS HEAT Metals are good conductors of heat Allows heat to pass through it. Sonorous: It makes a ringing sound.

             PROPERTIES OF METALS  Choose the link assigned to your name. GROUP 1: Adam, Fatima Hussain, Hussain Ali, Jumana Ali, Mohamed Isa, Zainab Hussain Kadhem. GROUP 2: Abbas, Abdulqader, Ali Mahmood, Ali Salah, Ghalyah, Hoor, Layal,Maryam Ahmed, Maryan Hussain, Mohamed Jassim, Maqtada, Noor, Waala, Zahraa, Zainab Hussain, Zainab Sayeed, Jana 

Investigating the properties of metals. Scientist divide all the elements into two groups: Metals and non metals. The properties of metals are:  Shiny, Malleable, ductile, good conductors of heat and electricity, sonorous. 1 . SHINY : Most metals have a shiny look. 2. Malleable: That means you can hammer or press a piece of metal into a different shape without breaking the metal. 3. Ductile: That means metals can be drawn into wires .                 4. Sonorous: This property refers to the ringing sound that metals make when they are hit.                         5. Good conductors of heat and electricity.