1. Science TAKS Review

2. Viruses and Bacteria
Viruses are not alive, Bacteria are alive

3. Viruses (not alive) Viruses – cause disease
ANTIBIOTICS DO NOT CURE THEM
ONLY IMMUNE SYSTEM
AIDS, the common cold, small pox, influenza, and warts

4. Bacteria (alive) Harmful - get antibiotics Helpful  Strep Throat
Staph Infections
Helpful 
decomposers – septic tanks, rotting meat
mutualism : intestines
cheese, yogurt

5. Evolution CHANGE Mutations Reproductions
Natural Selection- environment decides who lives… only tall trees- giraffes happy
CHANGE

6. Who would survive?

7. Symbiosis Symbiosis – relationship between two organisms
Mutualism – both species benefit

8. Predation – one species (predator) benefits, other (prey) is eaten

9. Parasitism – one species benefits, the other is harmed

10. Competition – two species want same thing

11. Commensalism – one species benefits, one is not affected
Remora fish eat shark’s scraps; shark is not affected

12. Food chain & food web
– who eats what
Arrows show
flow of energy

13. Trophic levels 10% 90% Producer - green plant - photosynthesis
Consumer – Must eat
Decomposer
breaks down dead and waste
10%
90%

14. Types of matter
Elements Fe H O Au
Compounds
FeCl3
H2O
CO2

15. Density D = M V
More dense
liquids sink!
Water density = 1g/ml

16. more viscous– the slower the flow
Viscosity
Resistance to flow
more viscous– the slower the flow

17. Buoyancy

18. Chemical Change Change of temperature Production of light
Production of a gas
New thing formed

19. Physical change Change in size and shape Making a solution
Change in state

20. Conservation of Mass 6CO2 + 6H20 --> C6H12O6 +6O2
Matter is never created or destroyed

21. Solutions
Solute- salt
Solvent – water
Soluble- salt can be dissolved

22. Force - a push or a pull on an object
F = ma Force is measured in NEWTONS (N)

23. Work - force causes an object to move W=Fd Work -JOULES (J)

24. Power – How fast you get work done
P=W/t
Power - WATTS (W)

25. Kinetic Energy - motion Potential Energy - energy stored
Click on the slide!

26. Energy
Conduction - heat transfer from one object to another by direct contact …solids

27. Convection - heat carried from one place to another in a liquid or gas as molecules move in currents caused by density differences…liquids & gases

28. Radiation - the transfer of heat energy through empty space
(heat from sun)….infrared

29. Soooooo……..Heat moves by-

30. Waves
Transverse wave - moves up and down as the energy travels right to left. Perpendicular
example: light, ocean
Longitudinal wave – moves back and forth as the energy travels right to left. Parallel
Example: sound

31. REFLECTION

32. Refraction

33. Electricity- 10th
Series Circuit - a circuit in which the current has only one path
Parallel Circuit - a circuit in which the current can take more than one path

34. READ!!!

35. Remember Use your Equation Sheet Use your Calculator
Use your Periodic Table
YOU need at least 41 correct to pass….. DO YOU HAVE THAT?