КАТЕГОРИИ:
АстрономияБиологияГеографияДругие языкиДругоеИнформатикаИсторияКультураЛитератураЛогикаМатематикаМедицинаМеханикаОбразованиеОхрана трудаПедагогикаПолитикаПравоПсихологияРиторикаСоциологияСпортСтроительствоТехнологияФизикаФилософияФинансыХимияЧерчениеЭкологияЭкономикаЭлектроника
|
Lesson 2. Q.1: Give the scientific term for:Q.1: Give the scientific term for: 1- The sum of potential and kinetic energies of an object under the effect of gravity is constant. 2- It composed of an acid solution with two different metals dipped in that connects from outside with electric wire. 3- Energy is neither destroyed nor created from nullity but can change from one from into another. 4- The pollution which caused by the cellular phones stations. [ ] 5- The pollution which is caused by car exhausts. Q.2: Write the scientific reason for: 1- Law of conservation of mechanical energy is applied by the motion of simple pendulum. - 2- The needle of magnetic compass moves (deflects) in the lemon and electricity activity. - 3- There is some harm of technology applications of energy transformation. - 4- The motion of the swing looks like the motion of the pendulum. - 5- Increasing the temperature of the electric lamp after a period of turning it on. - 6- It is preferable to establish the stations of cellular phones away from the human buildings. - 1- In the solar heaters, the solar energy is directly transforms into - energy. [Kinetic – sound – electric – light] 2- The electric energy transforms into kinetic energy in ................. [Electric lamp – cellular phone – electric fan – electric bell] 3-when you pull the arrow and strings the -energy is changed into energy. [Kinetic into potential – potential into kinetic – kinetic into heat] 3- During the hitting a -, .................energy is transformed into energy. [Kinetic – sound – kinetic – potential – sound – kinetic] 4- Sum of potential and kinetic energies is energy. [Mechanical – chemical – light] Q.4: What is meant by (Define): * Law of conservation of mechanical energy.
* Energy conservation law.
Q.5: Complete the following: 1- During rubbing of your hand energy is converted into energy. 2- Any body still conserve the .................energy that changes between .................and potential energies. 3- Energy neither - .................nor but change from one form to another form. 4- In the electric cell energy is changed into energy. 5- In the dynamo energy is changed into energy. 6- In photosynthesis energy is changed into energy. 7- In motor energy is changed into energy. Q.6: Explain an activity to show: 1- Law of conservation of mechanical energy.
2- The idea working of simple electric cell.
3- Electric circulation.
Q.7: Mention 3 harms of technology applications of energy transformation.
Q.8: On operating a car engine, several transformations of energy take place. Mention some of these transformations explain this with a simple diagram.
|