9th grade biology

1. There are 5 main substances that are needed by humans. they are carbohydrates, protein, fats, vitamins and dietary fibre.
2. Carbohydrates are organic compound that provide us with energy.
3. there are 3 kinds of carbohydrates, they are monosaccaharides, dissacharides and polysaccharides.
4. Proteins are very complex organic substances that help us to grow.
5. Kwashiorkor is one of desease that is caused by lacking of protein.
6. Fats are used to provide a source and storage of energy, protect organs from physical.injuries.
7. Water has the function to be solvent for inorganic and organic compounds.
8. there are 4 main digestive process. they are mechanical digestion, chemical digestion, absorption and assimilation.
9. inflammation, polyneuritis, and formation of ulcers are some effects of consuming excessive alcohol.

9th grade physics

1. pressure is force per unit area.
2. a rectangular wooden block measuring 0.250 m x 0.125 m x 0.840 m is resting on a table top. it has mass of 15 kg. calculate the greatest pressure and least pressure!
3. great pressure can be overcome by sharing the pressure to large area.
4. work is force per distance of an object.
5. Please give examples of work.
6.energy can only be changed, it can not be created or destroyed.
7. Energy is the capability to do work
8. there are several kinds of energy, they are chemical, potential, elastic and kinetic energy.
9. Power is the rate of work done
10. Brownian law states that all particles move in random and constant motion

chemistry final test (9th grade)

Please study from text book pages 121,122,123,141,142. please memorize the way to finish the questions.

9th grade chemistry summary ch. 6-7

1. there are 2 kinds of bonding. they are ionic bonding and covalent bonding.
2. ionic bonding is type of bond that is formed between positively charged and negatively charged ions by the transfer of electrons.
3. covalent bonding is type of bond that is formed when two atoms are joined together by sharing electrons.
4. for the comparison of those bonding, you can check on pg. 94 textbook.
5. each carbon atom in diamond is bonded to four other carbon atoms by strong covalent bonds.
6. each carbon atom of graphite is joined to three other carbon atoms in the same plane.

physics summary for 9th grade

1.  There are several kinds of main pressures. they are air pressure, water pressure and force pressure.
2. Pressure is influenced by the area and the weight / force of object.
3. The narrower the area of an object, the greater the pressure will be.
4. according to Pascal, liquid will give the same pressure to all parts of isolated container.
5.  work means force that causes displacement.
6. there are 2 kinds of energy. they are kinetic energy and potential energy.
7. according to the Principle of energy conservation, energy can't be created nor destroyed. it can only be changed.
8. in formula, we can express the principle as Ek = Ep.
9. Power means the work done per time.

chemistry 7th grade test sample

1. what can you measure in chemistry?
2. what are the tools in chemistry lab?
3. what is pure substance?
4. what are the differences between mixture and compound?
5. what are the techniques to separate mixture? explain 3 of them.

chemistry summary for 9th grade mid test

1. you can measure mass, volume, temperature of substances.
2. there are many tools can be used in.chemistry, such as flask, tube, thermometer, pippette etc.
3. pure substance means the substance consist of 1 element only.
4. mixture means the substance is made up of more than 1 element.
5.compound is substance that is made up of more than 1 subtsance chemically.
6. for the comparison of mixture and compound can be seen in textbook.
7. there are 3 states of matter. they are solid, liquid and gas.
8. for particle arrangement can be seen in textbook.

7th grade physics exercise for test

1.  What can you measure in physics?
2. Please mention 5 tools in physics laboratory!
3. What kind of job that involve skill in physics?
4. Please mention 5 base quantities that you know!
5. in your opinion, why do we need to learn physics?

summary of ch. 3-5 for 9th grade physics

1. inertia is the ability of an object to stay in its state.
2. the greater the inertian of an object, the more difficult it gets influenced by force.
3. there are 2 kinds of fraction. they are dynamic friction and static friction.
4. dynamic friction is a force that cause an object move while static friction is a force tha cause an object stopped.
5. mass is the fixed content of an object while weight is mass influenced by force.
6. density = mass / volume.
7. moment of force means the way of force produced temporarily and in particular time.
8. moment of force  = f x d
9. there are 3 kinds of equlibrium. they are stable equlibrium, unstable equlibrium and neutral equlibrium.

biology 9th grade ch. 2

<p>1. cell is basic unit of life which become the main units in more complicated life forms.
2. each living is composed of different cells which work together as system.
3. Animal cell consist of cell membrane, cytoplasm, nucleus and the other organelles.
4. cell membranes have the ability to protect the content of the cell.
5. cytoplasm is used to store protein, water, food and some organelles.
6. nucleus is the main part that bring the genetic charateristics of living things.
7. the nucleus itself contains chromatin, nucleoplasm.
8. there are the other organelles, such as mitochondrion, ribosome, endoplasmic reticulum (ER), golgi body and vacuole.
9. for the comparison between plant and animal cell can be seen on page 21 of your textbook.

Biology summary 7th grade for mid test

1. Biology is branch of science that studies about life.
2. the word "biology" is from "bio" means life and "logos" means knowledge.
3. biotechnology means the use of technology to develop the life quality of living things.
4. there are several factors that make living things different from non living things. the living things have the ability to move by themselves, to grow, to reproduce, to respond to their surrounding, and to make or find food.
5. all living things are unfluential to other living things.

biology 9th grade ch. 1

1. biology is branch of science that studies about life.
2. there are several kinds of branch in biology, they are zoology, botany, anatomy, physiology and many others.
3. living things have general abilities.
4. they are the ability to find or make food, the ability to move by themselves, the ability to excrete waste materials, the ability to grow and the ability to reproduce.
5. evolution means the ability of living things to adapt on their surrounding by developing their physical abilities.
6. extinction means the failure of living things to breed their own kinds.

chemistry questions for 9th grade test

1. what can you measure in chemistry?
2. Please mention the tools you can use in laboratory!
3. what is pure substance?
4. what are the differences of mixture and compounds?
5. please mention the technique of separation and explain one of them!
6. What are the differences of boiling and evaporation?
7. what is element?
8. Please explain the characteristics of each matter!
9. Please give 5 examples of mixture!
10. what is stated in Kinetic theory?

9th grade physics summary

1. there are 2 kinds of measurements. they are vector and scalar measurement.
2. vector measurement is the measurements  which  involve the direction of an object.
3. scalar measurement is the measurement that omit the direction of an object.
4. the example of vector measurements are velocity or force.
5 the example of scalar
measurements are mass, length
etc
6. velocity is the description of speed and direction of moving objects.
7. speed is the description of object speed.
8. acceleration is the change of speed in particular time.
9. v=s/t (v= velocity)
               (s = distance)
              (t = time)
10. gravititional acceleration will always be the same on the 1 plane.
11. the acceleration of sun light in vacuum is the same everywhere
12. deceleration is the decrease of speed in a particular time.
13. there are 2 kinds of acceleration. they are uniform and non uniform acceleration.
14. constant speed means that the speed has no acceleration.
15. the speed of an.object is influenced by the surface of plane

8th grade chemistry final test sem. 2

Please answer the following question briefly
1. What is meant by fossil fuel?
2. what is cracking?
3. please mention the use of fossil fuel?
4. what are the problems we face about fossil fuels?
5. what is the solution?
6. what are the characteristics of homologous series compound?
7. what are the chemical properties of alkane?

7th grade chemistry final test sem. 2

Please answer the following questions briefly.
1. what is atom?
2. What is meant by nucleon, proton and neutron?
3. what is isotope?
4. Please define Noble gas!
5. why do atoms form ions?
6. what is the difference of ionic bonding and covalent bonding?
7. please give an example for ionic bonding and covalent bonding

7th grade physics final test

Please answer the following questions briefly.

1. what are the types of energy that you know?
2. what is the meaning of conservation of energy?
3. what is work?
4. Please give examples that describe work?
5.. what is meant by conduction,.convection and radiaton?
6. please give example that describe conduction?
7. please give example that describe radiation

Physics 8th grade final test sem.2

Please answer the following questions briefly

1. what is meant by neutral wire, live wire and earth wire?
2. what is the main function of circuit breaker?
3. what are the hazards of using electricity?
4. why do we need double insulation?
5. What are the properties of magnet?
6. how to do magnetic induction?
7. how to do magnetisation by using electricity?
8.what are the uses of magnet in daily life (3 answers)

8th grade physics note (ch. 13)

Practical electricity

1. For electrical supply to our home, there should be a cable consist of live wire and neutral wire.
2. live wire is the wire which contain electricity and has potential difference. this wire is dangerous, while neutral wire is the wire which has no potential difference. in other words, the wire has no electrical flow.
3. in order to reduce the dangers of using electricity, we need to have : earth wire, fuses and switch, double insulation.
4. earth wire is the wire which is used to flow the extra electric current to earth instead of our hands.
5. fuses are used to prevent electrical fire which is caused by exceeding current.

Chemistry Review (8th grade, ch. 13)

Please answer the following questions briefly.
1. What is meant by fossil fuel?
2. What are the uses of fossil fuels?
3. Please mention 3 fuels which are taken from fossil fuels?
4. What is cracking?
5. Please mention the fossil fuels problems which we are facing?
6. What are the solutions to those problems?
7. How is fossil fuel formed?

Chemistry Assignment for 7th grade. (ch. 4)

Please answer the following question briefly.

1. What is meant by atom?
2. How is atom arranged?
3. Please define "isotopes"?
4. Please give the example of isotopes?
5. What is noble gas?
6. What is meant by atomic power?
7. Please define the meaning of "fusion reaction"!
8. How can an atom become positively charged or negatively charged?

You may find the answer from any sources. Please submit it before Sunday (April 7th, 2013) by sending your answers to edmsby85@yahoo.com. Don't forget to put your name on your answer page.