8th Q4

1. If the same pressure is exerted over a greater area will more or less force result?
3. Ladybugs are a natural method for controlling which population?
6. Type of environment coal formed from.
7. 0 and 1 denotes which code?
8. Type of chemical is used for mold.
10. Type of chemical is used for killing unwanted plants.
11. What type of scientist studies matter and its composition?
12. As the angle of attack increases the speed of the air on the top of the wing __________.
14. 3 oxygen molecule make up?
15. Between infrared waves and radio waves in spectrum.
17. The force that opposes the pull of gravity.
19. What is water vapor, fog and pollution?
21. The kind of energy utilized by regenerative braking systems?
23. 10,000 years is the lifespan of what waste?
24. The movement of matter is studied by ?
25. Which stroke of an engine generates a spark that ignites the fuel?
29. What type of hybrid car uses both gasoline and electric motors to power the vehicle?
30. Engine stroke involved in moving the piston downward into the engine, thereby opening the top of the cylinder to allow for the mixing of air and fuel
31. The most common greenhouse gas.

2. Which type of farming is 65 % more efficient than conventional farming.
4. Type of chemical is used for killing bugs.
5. The MSL landing used?
9. Type of chemical is used for killing rats.
13. Remains of living things buried for millions of years.
16. What is the purpose of geosynchronous satellites?
18. What kind of wave transmits both audio and visual signals to your television?
20. Barber’s chair is an example for what type of device?
22. 5.4% of stars _____ scientists propose host planets similar in size to Earth.
26. The primary cause of pollution.
27. Force exerting pressure to push the airplane backward.
28. What type of shields of a microwave oven serves to shield humans from radiation?