1. STUDY GUIDE IN SCIENCE 5
THIRD QUARTER
1. Tinyplantsgrowingonrocks produce acid thatmake the rock’ssurface soft and weak.
2. The followingare the activitiesthatcontribute toweatheringof rock. Mining,quarrying and road constructions
3. Toolswithsharpedgesshouldbe carriedwiththeirbladespointing –down
4. What shouldbe checkedforthe safe use of a fixedpulley? The pulleyshouldbe safely fastenedto the pole or beam.
5. The animalsthatexpose rockstoweathering are the following?Ants,snakes,earthworms
6. Exfoliationusuallyinhappens humidplaces.
7. The forcesof weatheringconstantlyacton the rock to form soil.
8. Soil isimportantbecause itsupports plants growth.
9. Scissorsare two leversthatare joinedtogether.The place where the leverare joinedisthe fulcrum.
10. The knife andhatchetare examplesof a double wedge.
11. One full turnof the screw headmakesthe screw digintothe wooda distance equal to space betweentwoparts of
the thread.
12. A screwhelpsdoworkby a gain force.
13. How do simple machineshelpus?Theymake ourworkeasier. Theymake our work faster. They make our work
better.
14. Toolswithsharpedgesshouldbe carriedwiththeirbladespointing down.
15. The continuousbreakingupof rocks iscalled weathering.
16. Metamorphic rocks change to igneous rockby melting.
17. Whichof the diagramillustratesaninclinedplane?
a. c.
b. d.
18. The inclinedplane isamachine thathelpsdoworkby lesseningthe force you exert.
19. Whichof the followingstatementare true aboutthe inclinedplane? The longerthe inclinedplane is,the greater is
the gain inforce and the lowerthe inclinedplane is,the greater isthe gain in force
20. The followingstatementsdescribethe rockcycle. The process of buildinguprocks continuouslyhappen.Different
kinds ofrocks form in differentconditions.Newrocksformed are much differentfrom the original rocks.
21. The wheel andaxle isa special formof a lever.
22. What isinclinedplane? Itis a slantingflat surface.
23. Igneous rockand sedimentary rocksare changedto metamorphicrocksby heat and pressure

2. 24. Whichshowsthe correct pair of igneousandsedimentaryrockstometamorphicrocks? Shade-----schist
25. What kindof pulleyenablesyoutoraise andlowera flag? Fixedpulley
26. How doesa fixedpulleymake workfaster? Itchangesthe directionof the force.
27. The wheel andaxle helpsby producinga gain in force.
28. The wheel axle isaspecial formof a lever.
29. Whichkindof igneousrockformsbeneaththe earth’ssurface? Intrusive rocks
30. How are sedimentary rocks formed? by layer deposition of sediments
31. Which sedimentary rock was formed from clay with silt? shale
32. Describe the layers formed by sediments as they settle in water. Heavy and coarse particlessettle at the bottom.
Light and fine particles form layerson top.
33. When the fulcrum is half way between the resistance and the effort, there is- no gain in force and in distance
34. Mineralsinrocks can be identifiedthroughtheir color.
35. The true colorof rocks can be seeninits - innersurface
36. Whichaffectsthe size of crystal formationinigneousrocks? coolingtime
37. Intrusive rocksthat coolsveryslowlyhave -large crystal
38. A leverinwhichthe-fulcrumisbetweenthe effortandthe resistance isclassifiedasa – first class lever
39. What isthe bestwayto have a good rock collection? Scoutsfor a place where variedpiecesof rocks can be found.
40.Leversare classifiedaccordingtothe- positionof the effort,resistance,and fulcrum
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