Yr+9+Revision+semester+2

Revision

Before you start these revision questions you will need to prepare yourself by =Making your Revision outline= How to study Science 1 make a glossary - every topic has a __//** guide sheet **//__ - in the guide sheet there is a list of words and terms you should know - 2. Collect your notes - the __//** guide sheet is a course outline that lists the main concepts **//__ you should learn and the main activities you should do. You should build your notes from your text and your notebook - but make sure you have information on each of the ideas listed in your guide sheet. 3. Sumarise your notes - a good summary will include diagrams and experiments that summarise the key concepts of each topic 4. convert all this into a concept map - you are aiming to get it down to a half page for each topic. Don't worry if yours is a bit bigger

Before the exam - get friends to test you on the glossary, try to redraw the diagrams in your summary complete and test or practice questions

=Use assesson test yourself for each of the topics we have done so far.= __//** topics to be tested this year in semester 2 **//__
 * 1) chemical reactions (and 'inside the atom' is assumed knowledge)
 * 2) body at war disease
 * 3) ecosystems

only these three topics =Here are some quizlets=

to revise the terms in ecosystems https://quizlet.com/join/Ueqe8MD59

Here is one for body at war - the diseases topic https://quizlet.com/89140153/year-9-unit-4-body-at-war-flash-cards/ and another https://quizlet.com/29981596/body-at-war-flash-cards/

Here is one for chemical reactions and inside the atom https://quizlet.com/_3lr7nw

=Here is a practice questions for this years exam=









And some powerpoints to go through



Here is an old summary sheet of all the main things for the exam from last year -- don't do the dynamic earth

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=Go here to find the Year 9 Test pages - there are some online tests - use them like a revision sheet or a quiz to review the topic= http://mrwallisscience.wikispaces.com/Year+9+tests

__//** Some Extra practice questions for the end of semester 2 exam **//__ Ecology
 * 1) Give examples of an autotroph, herbivore, producer, 3rd order consumer
 * 2) how are the following different
 * 3) - ecosystem and community, biosphere and environment, population and habitat
 * 4) wite the equations for photosynthesis
 * 5) write the equation for respiration
 * 6) use the following terms to explain transpiration -- stoma, stomates,xylem, water, water vapour
 * 7) use the following words to explain the purpose of translocation - phloem, photosynthesis, strach tuber, respiration, leaves
 * 8) draw a food chain that has 4 elements.
 * 9) use the food chain above to develop a pyramid of numbers and a pyramid of biomass
 * 10) sampling a habitat what is the difference between a quadrat sampling and a transect, capture counting and capture release counting.
 * 11) in a habitat some animals eat very similar food, others eat each other, and others need other animals to help them survive. explain and give examples of commensalism, parsitism, predator, from the same habitat.
 * 12) describe how water loss is controlled in a plant: use the terms, stomate, guard cell, transpiration, xylem, air spaces, flacid and turgid
 * 13) design an experiment to test the effectiveness of seaweed fertiliser on plant growth:use the terms dependent variable, independent variable, control, fair test,

Diseases
 * 1) What is the difference between infectious and non infectious, give an example of each
 * 2) rank these pathogens in order of size bacteria, prion, virus, protozoa // Plasmodium //
 * 3) Contagious disease can be controlled by _
 * 4) __ An example of a vector of black death is __ _
 * 5) An example of a vector for smal pox is
 * 6) An example of a vector for flu is
 * 7) How does your body fight this flu virus?
 * 8) could you become immune to the flu virus?
 * 9) "Prevention is better than cure" give an example of a disease that is caused by a bacteria and explain how it might be prevented.
 * 10) How do you prevent small pox? give a few examples
 * 11) Give some examples of non contagious diseases
 * 12) explain the difference between plague and pandemic

//** ++++++++++++++++++++++++++++++++++++++++++++++++ **// = more revision questions on Disease = What fights disease but is carried in the blood what fights disease and is carried in the lymph what happens when your glands swell up when you cut your self and get infected with bacteria the cut may get inflamed - why is this a good thing? --what would the antibodies do?---where would you find the antigens How does the body remember if you have had chicken pox? If you get an injection (vaccine) for the chicken pox you will expect that you will........... If you get sick after the vaccine this might be a good thing why? prions are blamed for causing mad cows disease- what organs were affected? what tissue is affected by malaria plasmodium. If there is an epidemic of malaria what would you expect to see? the plague was an endemic or pandemic or epidemic?

=
============= Yr 9 Revision semester 2 Answers to chemistry 1. a) NaCl b) CO 2. a) HCl, b) NaOH c) HCl d) water e) NaOH f) vinegar, g) detergent h) Mg 2 + i) Cl - 3. a) NaCl, b) AlCl 3 c) MgNO 3 d) CaSO 4

4. How many of each atom a) 1 Mg, 2 N, 6 O b) 2 Ag, 1 S  c) 1 Fe, 3 Cl

6. a) Precipitation b) Combustion, c) Neutralisation 8. Endothermic - takes in heat -makes surroundings cold - thermometer goes down  Exothermic, gives out heat, makes surroundings hot, thermometer goes up  9. Physical change is a change of state or mixing things together that can be separated using physical means - eg filtering, evaporation etc  Chemical change is the result of a combining of atoms of an element to make a molecule usually evident by a temp change, gasses given off or colour change  10. 3 properties of an acid, corrosive, sour, gives off Hydrogen gas when it reacts with metals, turns blue litmus red, turns universal indicator red or orange or yellow,  3 properties of a base feel slippery, neutralise acids, turns red litmus blue, turns universal indicator blue, purple, tourquoise.

examples see question 2. strong base = sodium hydroxide.

11. pH scale tells us the concentration of Hydrogen ions present in a compound and hence tells us how strong the acid is 12. An indicator tells us the presence of an acid or a base. red litnus, blue litmus, universal indicator, methyl orange, phenopthalien 13 Netralisation 14. groups are vertical all elements have same number of electrons in the outer shell, Periods are are horizontals all elements have the same number of shells of electrons but different number of electrons in the outer shell.

15. Electronic configuration tells us the number of electrons in each shell of the atom in question. 16 C 2 X  3. C

Answers to Page 3 and Page 4



f name the supercontinents in order of appearance -Pangea, ->laurasia and gondwanaland where was Australia 200million years ago - closer to the equator or closer to the south pole -sth pole How did fossils of rainforests occur in Antarctica - rainforests occurred when antarctica was closer to the equator where the rf can grow. but died out and became fossiled as antarctica moved to the south pole. When 2 continental plates collide what is the result? -earth quake, mountain ranges - eg humalayas

When an ocean plate slides under a continental plate it is called a ___....... Subduction zone...... an example is - south america - Andes mountain range__

__Why might volcanoes appear above this area? - all the ocean plate is being melted and a big blob of molten magma may sit beneath the mountain range and gradually melt its way to the top.__

__what is magma and how do convection currents drive continental drift__

__how do earth quakes occur (because the plates slide past each other in a jerky motion releasing the built up energy) -__ __where would you find the focus, epicentre - see page 289 - focus is where the plats are liding past each other and the epicentre is the land surafce directly above it.__

__In a volcano where would you find the crater --- is the top of the volcano - tits the main outlet for lava - and the vent - at the side and is a minor outlet for lava__

__how does continental drift explain the following,__ __tsunamis,--plates move under the sea- may cause a plate to lift - this pushes the water out of the way and makes a wave.__ __himalayas,__ __deep ocean trenches like the marianas trench. __

TARGETTED REVISION quizlets - these help you with the revision of terms required for your exam. http://quizlet.com/class/737994/

Another set of quizlets for you http://quizlet.com/class/851139/

++++++++++++++++ More dynamic Earth questions Dynamic Earth Describe how the continents might be drifting - convection currents in the magma are making the plates above move towards or away.. diagrams?? what evidence is thereof this? The continental plates started off all together as one super continent called Pangea. What happened after this? formed G and L

explain how the continents could move? the hot magma has convection currents and this pushes the plates riding on top around the earth. What continents made up gondwanaland? Africa, Sth America, Australia, Antarctica- what are the main continents to make up Laurasia Nth America, europe and asia

list some evidence that geologists use for proving that gondwanaland and Laurasia were once joined together. fit together, fossils identiacl and found on each supercontinent. Rock layers match up, fossila of animals, plants, pollen for each of these describe the movement of the continental or ocean plates

how is a mid ocean ridge formed - ocean plates being forced apart by the magma coming up between them pushing them apart.

how were the himalayas formed continental plates collideing and being pushed up

how were the andes mountains formed- an ocean plate sliding under an continental plate and forcing the continental plate to buckle, some volcanoes will form also.

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