7th Grade Science Midterm Review

Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ Date _ _ _ _ Period _ _ 7th grade Accelerated Science 3rd Quarter Mid-term Study Guide Scientific Inquiry and Practices 1. Define Independent Variable and Dependent Variable and give an example of each. _Identif~ b controls and constants in a lab experiment scenario. Create multiple Research Questions an e able to separate them into the correct variables. C,..on-w-o\ tfJfoe,p::. tOVY\~ ,•se.-1 l:..\/:: Vot,'o.~\t ~OC.,. 3too,o - .; c .....~i~/ c.~~ '~\/: m~w.fC.. - {. o~o l 2. What is the difference between an observation and an inference? CJo.sv: da\-~ ~~r-e.d i~+. ~ c.onc.\~,on 3. What is a quantitative~ servation?G ive an example C'osv. ~ c . Wk...t----~~ s-....c. Qtf4U,)I"\ 'W0"'1 vJ/ it1~11M ~t1'h .""colA, \-\Q..v"d +~" 4. What is a qualitative observation? Give an example. ~ "L. Ok, se,--.,ca;•~., l ~1.1c:X 1,1 'T\.t~r f. Wu~.d~, ~~ i~ '-'d\,~j ct\ SOISeS 5. Be able to interpret graphs for variables, relationships, and ~ nos. -...J 80 -g i 70 ~60 ~ i so ~ ~ 40 ·z; ~30 i 20 :I ,cs 10 1' 0~. . . . . . . ............,.......,.,......,.................,~....., ) r,,v ~ '/ $1 $2 $3 $'1 Price per Bushel (dollars) $5 Answer these questions about the graph above: , a. What is the dependent variable on this graph? ~~ b. Does the price per bushel always increase with demand? c. What is the demand when the price is $5 per bushel? 10 1'Jo 6. Understand the metric system. What is the base unit of metric measurement for each of the following? Length/Distance Volume 00 ek,.f: Liv e l""e'nf :. CL\si LL~ Mass . Time St.Gena 'Foc,e..:~~s. 7. What is the difference between a scientific question and a hypothesis? SQ-: SoM~:"j ctS~ed C:\oa~ ,'de~ po:. ed~ auts~ I -pi•posu • .,,,.,,..4,or, . 7th grade Accelerated Science 3 Quarter Mid-term Study Guid e s. J.v Understand and calculate density: .,...,_,_ a. Formula for calculating density is: V::Yf\/' b. Solve for density: li d holding a volume of An irregularly shaped stone was lowered into a graduated cy n er g 25 st th water equal to 2 ml. The height of lll~ water rose to 7 ml. If the i ass of e one was ' what was its den~ity? 1 1).::. ~ 9. Identify correct lab procedure. What is wrong in the picture on the right? l) :::' 5j/W\ Physics - Force & Motion 10. Calculate for speed, distance, or time.• a) Draw the speed triangle: b) Solve for average speed. George walks to a friend's house. He walks 750 meters North, then realizes he walked too far. He turns around and walks i,so meters South. The entire walk takes him 13 seconds. What is his speed peic second? J5 ::' d./.Jr 5 := ,!.D ~;;i-- 7~,Cf 2 rt1 /.5 11. Be able to create & interpret a speed/position/time/distance graph. The graph shows Marie's distance from home (A) to work (F) at various times during her drive. Marie's Tllp II) Wodt · ·· - ·-· - ··· - - - -- ·· ··· · · --- - - i::- a) Marie left her briefcase at home and had to return to get it. State which point represents when she turned back around to go home and explain how you arrived at that conclusion. -e-c. S. , 20 ~ 15 g 10 · ··- ··- - - - ~ ·F I -, I i :---'--"""-------(Pt she. is b0.G~ A..t \,~i~ti iv,9 0 5 ._ • 10 15 20 25 30 35 40 Tlme\mln) b) Marie also had to wait at the railroad tracks for a train to pass. How long did she wait? 5tYl (1>-£) . 7th grade Accelerated Science 3 Quarter Mid-term Study Guide , Match the Part of the graph to th" d . . , escnpt1on: 12. Steady acceleration: ?,. Stcudy specll: B. @ ' C. Gradual nccelcration: Steady deceleration: ~ 1) TIME 13. What are the three ways you can accelerate? spe~cl "ft s\ov-, do~l ~AV)~~ d\~~~'o.-, 14. What is the difference between speed & velocity? V: sr~u. t dit'CL~ov, 15. Define & give an example of each of the following laws: a. Newton's 1st Law tr'i La.~ o+ :Cv,e.~-h·._ r=W\-Newton's Law At),,•o r1 / ~ x,v b. Newton's 2nd Law c. 3rd 16. Be able to interpret force diagrams: The picture below is a free body diagram of a box on a table. What is the net force on the box? Ftable = 10 N Fg,avlty "' 10 N 7th grade Accelerated Science 3 Quarter Mid-term Study Guide r - -·- 20. Define, label' and und erstand th El e ectromagnetic Spectrum oj Y I c;,. I ~ 1 I v :l .f Hi~.b I. L.o"trequency frequency a1Jelength . .,....,..., Wavelength a. Which part of the spectrum has the most energy? ~0-.MV'V"\ ~ b. List the colors of the light spectrum from the longest to shortest wavelength. c. As the wavel~ affected? oY§E !o~ agnetic wave decreases, how are the frequency and energy d. When we observe the Doctor's Tardis we see blue. Please explain why we see that color when all the visible light is hitting it. u4,'1 -.»Sof'loa c>...\\ eolo f ~ T b11~ blue, . -&lv~ i~ r8'=\ukd.. ,·~ e.tla . 21. What are the two things that the + ed of souncl depends, on? . \ ~ v; \oY'o..+'lbn$ -"1~ Wl~o.u,~ c-w:..wtp . 22. What unit measures loudness? de, de,.:b-.l, 23. What determines the pitch of sound? ff'~Ut.t'\C.."'> ~4. What type of wave is a sound wave? FQ lorwpfdltlot't&t /lo"15;~,.-,~ If . _, . - -~ 25. Label the following ranges as Human hearing, subsonic, and ultrasonic. ti~1 t1\W4W)t(,, \ > 20,000 Hz \ • 26. List the following materials in terms of how quickly sound travels through it from fastest to slowest: air, water, steel 0 I ~ tf' \ 11'?. a, ~ l \\ 27. Label the parts of this sound wave. Use the following terms: compressions, rarefactions, wavelengths Longitudinal Wave ► Lotl\ptcs, iot\ 28. Can your hearing be repaired after it is damaged? 29. Can deaf people benefit from hearing aids? NO '/L!) Astronomy 30 Llst h~;ts,~tr:o ~:n,J I5 I u N I B oc~~;r~ s;lil:o? 31. What is the heliocentr; ~en y 32. Why do the planets orbit the S~ :SUV\•~ ~fo..Vi~ 7th grade Accelerated Science 3 Quarter Mid-term Study Guide ?.;'- 33. Compare & contrast the inner/ terrestrial and outer/ gas planets. 0 34. Define the following terms: a. Light year '1:)\1!n-C.. \(.,\,,+ 4-r..,1111,11, ~ Gis\0,11~ 'o/'r b. Astronomical Unit . C. Rotation 4 ("' ,,_ '-0 ,._,r If' 1111'll 1cM "'i\&S , ~ • Sl,)t;I / I :so,000, i,oo \(.,., "fiv\td ~~ on "'-~•·., d. Revolution .,.. ~-~~~ _ o-...fol)~cl N\~~~ o~ LL+ 35. What characteristics do we use to classify stars? \~0 l ,~e. +-i \"° \o(,'q ~~~, 6 L 2,.~ 1 1 36. Describe how Earth's tilt l~aas to se~ nal changes. oJJc,'-"4) ~r cl(v-~ c:l11~s II'\ s11 m l'l!er- ~ i vicl l v-&Ca\- C..D \ 0 f' I V"CLJ~ +- \on~c.r vAJ s ~ ~\,,o r.\e:ir 44J s 111 ~~r . 7th grade Accelerated Science 3 Quarter Mid-term Study Guide . m below. What causes a lunar 37. What causes a solar eclipse? Explain and draw a labeled diagra So\o.f ..,,ups e c li> - 00" "" ~~t-J~\1 $kAM~ o ~ M, 5 eclipse? £'.xplain and draw a labeled diagram below. L..\)Y\a.t"': ~ c..,..~-\5 $k~o"° o~ w,o o~ 38. What causes the tides on Earth? t1A.L1. o.{: .-lool'I~ ~ f O. \fl½ 6 'I\ 39. How do the Moon's phases depend on the relative position of the Sun, Moon, and Earth? C...\-i~u o..u-"o" - ~e d,f~ \i+WIOOW\ / V\i~'n+. ~O'-U\'\-- ~ 40. Label the phases of the moon. f l~ Q Q Q C,!~ 1'j 41. C-. ~ Q ~ C. The diagram below shows the Moon as It revolves.eround Eanh. The numbered locations represent different positions of the Moon In its orbit. \S'\'"' ~' """ (Nol dra~ Sun's -4 rays o scale) Which Moon phase would be seen by an observer in New York State when the Moon is at posiUon 27 7th grade Accelerated Science 3 Quarter Mid-term Study Guide L r \~~ + MDV~S r 0,-, . $0 Ou.Jr rd · Lt m o er greatest size to smallest size: planet, comet, star, dwarf planet, aS teroid, solar system, galaxy, universe . _ fr~m ----./ 'a~\ ~'j ' l) nl 'll'Use.' s+G¥"' 'j) I- ._\ • "]:) "P ' S"':t , 45. Draw the following constellations C..CS"\'1-1. e, \. _l Q.i~r'o1•~ a) Ursa Major b) Ursa Minor c) Cassiopeia d) Cepheus • • • • • • • • • • • • • • • • • • • • • • • I e) Draco I f) Scorpius ' •• • • • I g) Orion • • • • I •• • • • • • • • 1) Lyra • • • • • • • • • • • • k) Gemini • • • • • •• j) Canis Major • • • • • • • • i) Leo h) Cygnus • • 7th grade Accelerated Science 3 Quarter Mid-term Study Guide