Post on 27-Mar-2015
What do youknow about
Science?
Kara is pushing her bicycleup a hill. Where does Karaget the energy to pushher bicycle?
A. From the food she has eaten.B. From the exercise she did earlier.C. From the ground she is walking on.D. From the bicycle she is pushing.
1
It rained early in the morning. A studentsees a puddle of water on the sidewalk when she travels to school. The water in thepuddle is gone when she travels home.
What happened to the water in the puddle?
A. It froze.B. It melted.C. It condensed.D. It evaporated.
2
If all of the fish are removed from this foodweb, which animal population will most likelydecrease first?
A. Turtles B. Mosquito larvaeC. Pelicans D. Dragonfly larvae
3
Which two planets areclosest to Earth?
A. Mercury and SaturnB. Mars and JupiterC. Mercury and VenusD. Venus and Mars
4
Sound is made when a drumstick hits the drum.This happens because theforce of the drumstickon the drum causes …
A. vibrations.B. electrical currents.C. heat energy.D. a magnetic charge.
5
Which of these refers onlyto living things?
A. clouds, fire, riversB. fire, rivers, treesC. rivers, birds, treesD. birds, trees, worms
6
People wear hats when outside in the winter.
How do hats help people stay warm?
A. Hats stop thermal energy from leaving their heads.
B. Hats slow down the thermal energy leaving their heads.
C. Hats stop cold from entering their bodies throughtheir heads.
D.Hats slow down cold from entering their bodies through their heads.
7
Which of these best represents Mars?
A. QB. RC. SD. T
8
About how long does it take Earth to make a complete rotation on its axis?
A. one dayB. one weekC. one monthD. one year
9
Which of these is a good conductor of electricity?
A. glassB. metalC. rubberD. plastic
10
A car skid more on a wet road thana dry road. This happens becausebetween the tires and the dry road,there is more …
A. gravityB. magnetismC. frictionD. heat
11
Light traveling through apair of eyeglasses is …
A. refractedB. transmittedC. absorbedD. reflected
12
Which of the following canbe attracted to a magnet?
A. gold ringB. glass marbleC. iron needleD. wool sock
13
This is a drawing of abird’s foot.
Where would you beMOST likely to find such a bird?
A. forestB. lakeC. desertD. meadow
14
This experiment wasprobably set up to answerwhich of the followingquestions?
A. What is the mass of the ants?B. Will ants go to a dark or light area?C. How many kinds of ants are there?D. Where do ants get food?
15
Which travels fastest?
A. a trainB. an airplaneC. soundD. light
16
What tool is used to find thetemperature at which water boils?
A.
D.C.
B.
17
The wires connecting the battery and the lightbulb create a closed circuit. What would happen if one of these wires were cut?
A. The battery would lose its charge.B. The glass would crack.C. The light would go out.D. The wire would become hot.
18
John kept some seeds on moist cotton in adish. Mike put the same kind of seeds in adish beside John’s dish, and covered themwith water. After two days, John’s seedssprouted, but Mike’s did not.Which is the most likely reason?
A. Mike’s seeds needed more air.
B. Mike’s seeds needed more light.
C. Mike did not put the dish in a warm enough place.
D. Mike should have used a different kind of seed.19
What is theapproximate diameterof this coin?
A. 2 millimetersB. 2 centimetersC. 2 metersD. 2 kilometers
20
Which of these questions can be answeredfrom the results of this experiment?
A. Do beans need light in order to grow?B. Can beans grow faster in groups of eight?C. Does seawater affect bean growth?D. How much water is needed for beans to grow?
21
The moon produces no light,and yet it shines at night.Why is this?
A. The moon reflects the light from the Sun.
B. The moon rotates at a very high speed.
C. The moon is covered with a thin layer of ice.
D. The moon has many craters.22
Which experiment would best show howdifferent methods of plowing fields ona hill affect erosion?
A.
D.C.
B.
23
A beam of light strikes amirror as shown to theright.Which picture best shows what the reflected lightwould look like?
24
In a box there is a mixture of ironfilings and sand. Which is theeasiest way to separate the ironfilings from the sand?
A. Pour water on the mixtureB. Use a magnifying glassC. Use a magnetD. Heat the mixture
25
What is the mass of these rocks?
A. 10 gramsB. 17 gramsC. 19 gramsD. 22 grams
26
An uncovered bowl of water was placed inthe refrigerator. Each day the amount ofwater left in the bowl was recorded. Whichgraph probably shows the results?
A.
D.C.
B.
27
When a coin is dropped, it fallsto the ground. As the coin falls,it loses potential energy and gains what kind of energy?
A. kineticB. chemicalC. electricalD. solar
28
The picture shows the process of …
A. meltingB. boilingC. condensingD. freezing
29
Which part of a jackrabbit most helps itescape predators?
A. long legsB. thick furC. short tailD. small head
30
On the prairie, the herbivores wouldcompete most for …
A. oxygenB. spaceC. grassD. soil
31
The prairie is ideal for the growth ofgrasses because it has rich top soil. All ofthese processes help form topsoil EXCEPT …
A. decay of treesB. weathering of rocksC. erosion of hillsD. movement of oceans
32
Which of these would be the best way tofind whether a softball will roll down a hillfaster than a basketball?
A. Determining which of the balls has thegreatest mass.
B. Observing the balls rolling down the samesection of a hill at the same time.
C. Throwing the balls into the air at the sametime to see which goes higher.
D. Dropping the balls from the same heightand observing which hits the ground first.
33
When light hits an object, therays can pass through it, bounceoff it, or be absorbed by it.Light rays that bounce back are …
A. radiantB. reflectedC. refractedD. radar
34
Which of these is a process that allows plants to convert light energy into food energy?
A. reproductionB. excretionC. digestionD. photosynthesis
35
Which material will soundtravel through the fastest?
A. waterB. airC. steelD. cloth
36
The moon revolves around …
A. itselfB. the EarthC. the SunD. the solar system
37
The picture shows a block ofwood floating in fresh water.If this block of wood were placed in salt water from the ocean, which picture shows what would happen?
38
A student wants to find out which type of soilholds the most water. He uses four identical potswith holes in the bottom. He fills each pot with a different type of soil and waters the pots withthe same amount or water. How can he find outhow much water stays in the soil in each pot?
A. By planting seeds and measuring plant growth.B. By measuring the amount of water that drains
from each pot.C. By observing which soil looks wettest after
the water has been added to the pots.D. By feeling the soil before and after adding
water to each pot. 39
Which of the following thermometersshows the boiling point of water in a pan?
A.
D.C.
B.
40
The rotation of the Earthon its axis causes …
A. seasonsB. yearsC. monthsD. days
41
Sound waves travel best through …
A. gasesB. liquidsC. solidsD. vacuums
42
The substance that makesplants green is known as …
A. waterB. calciumC. chlorophyllD. carbon dioxide
43
To find out whether seeds growbetter in the light or dark, youcould put some seeds on pieces ofdamp paper and …
A. keep them in a warm, dark place.
B. keep one group in a light place and anotherin a dark place.
C. keep them in a warm, light place.
D. put them in a light or dark place that is cool.44
Some things were buried in wetground. Several years later theywere dug up. Which thing is MOSTlikely to have stayed the same?
A. an egg shellB. a plastic cupC. a paper plateD. an orange peel
45
Which of these will happen ifthe temperature of a metal panis increased?
A. The pan will begin to lose heat.B. The molecules of the pan will
move faster.C. The metal will change into
another metal.D. The pan will contract.
46
When a glass jar is placed over alighted candle, the flame goes out.Why does this happen?
A. carbon dioxide is trapped in the glassB. it gets too hot in the glassC. the oxygen will be used upD. the glass makes it cold
47
Which picture does NOT show an insect?
48
Four children can feel and smell an object inside a bag, but theycannot see it. Which of thefollowing is NOT an observationabout the object?
A. “It is flat at one end and round at the other end.”
A. “It smells like peppermint.”C. “It has a bump on it.”D. “I hope it is candy.”
49
Ken put a thermometer in a glass filled with hot water. Why does the liquid inside the thermometer rise?
A. Gravity pushes it up.
B. Air bubbles are released.
C. Heat from the water makes it expand.
D. Air pressure above the water pulls it up.50
Some children were trying to find out whichof three light bulbs was brightest. Whichone of these statements gives the bestSTART toward finding the answer?
A. “One bulb looks brightest to me, so Ialready know the answer.”
B.“All the bulbs look bright to me, so therecannot be an answer.”
C.“It would help if we had a way to measure the brightness of a light bulb.”
D.“We can take a vote and each person willvote for the bulb he thinks is the brightest.”
51
Here is a picture of the inside of a box. If you put a worm on the bottom of the box, to which corner would you expect it to go?
A. damp and lightB. dry and lightC. damp and darkD. dry and dark
52
The Sun is bigger than the moon,but they appear to be about thesame size when you look at themfrom the Earth. Why is this?
A. The moon shines only at night.B. The Sun is rotating.C. The moon is closer to the Earth.D. The Sun is higher up than the moon.
53
When the Earth is seen from outerspace, it looks mainly blue. This isbecause most of the Earth iscovered with …
A. iceB. mountainsC. oceansD. deserts
54
Which object helps peopleunderstand what makes upwhite light?
A. barometerB. prismC. microscopeD. thermometer
55
The Earth’s surface can changeeither quickly or slowly. Which ofthese can happen when rocks andsoil in the Earth move suddenly?
A. landslidesB. tornadoesC. hurricanesD. blizzards
56
How is the Earth differentfrom all of the other planets?
A. It has a breathable atmosphere.B. It has a rocky surface.C. It is warmed by the Sun.D. It rotates on its axis.
57
Which of the following wouldreflect rather than refract light?
A. magnifying glassB. mirrorC. prismD. lens
58
Which of these materials is agood conductor of electricity?
A. rubberB. glassC. metalD. newspaper
59
Fossil fuels are usually found …
A. in the atmosphereB. below groundC. at the surface of the oceanD. on mountain peaks
60
All of these are consumersEXCEPT a …
A. butterflyB. waspC. bullfrogD. tree
61
Which of these substancesconducts electricity the best?
A. woodB. brickC. copperD. plastic
62
Which causes rocks in astream to be smooth?
A. weatheringB. air currentsC. earthquakesD. movement of fish
63
Which of the followingmaterials is transparent?
A. clear window glassB. your eyelidsC. solid wood doorD. white paper
64
Which weather term bestdescribes the words above?
A. humidityB. atmosphereC. precipitationD. barometric pressure
Rain, Snow, Sleet
65
The energy used to move mostbicycles is an example ofwhat type of energy?
A. electricalB. mechanicalC. chemicalD. nuclear
66
A group of students was preparing anactivity to determine whether certainmaterials will float or sink when placedon water. Before the experimentstarted, one student said, “I thinkthe spongewill float.”This statementwas …
A. a conclusionB. a factC. an observationD. a prediction
67
A shiny aluminum screen can beplaced on the windshield of aparked car. This screen helps tokeep the car cool because it …
A. reflects the sunlightB. absorbs heatC. causes evaporationD. conducts electricity
68
Why is photosynthesisimportant for plants?
A. It collects sunlight which is usedto make food for plants.
B. It gets rid of plant waste products.C. It changes plant sugar into
stronger chemicals.D. It helps attract insects to plant flowers.
69
During a thunderstorm, yousee the lightning before youhear thunder. That is because…
A. light has a greater mass than sound.B. sound has a longer wavelength than light.C. light travels faster than sound.D. sound and light travel at the same speed.
70
If the Earth moved farther away from the Sun, which ofthese would probably happen?
A. There would be no moon.B. There would be more solar eclipses.C. There would be colder weather.D. There would be more seasons.
71
Which of the following wouldbe safe to do during alab activity?
A. running in the classroomB. leaving a water spill on the floorC. touching hot surfacesD. following lab rules
72
Butterflies get food from the flowers of aplant. They also lay their eggs on the leavesof the plant. As the caterpillars develop,they eat the leaves of the plant
How does the plant benefit from butterflies?
A. Butterflies help the plant grow larger flowers.
B. Butterflies’ eggs help the leaves to fall off the plant.
C. Butterflies help pollinate flowers so that seeds can form.
D. Butterflies help add nutrients to the nectar of the flowers.
73
This plastic rain gauge is shown before andafter a rainstorm. About how much rain fellin the rain gauge during the storm?
A. 5 centimetersB. 3 inchesC. 5 inchesD. 2 centimeters
74
Which of these is being changed from a solid to a liquid?
75
Which roller coaster will not have enoughkinetic energy at the bottom of the first hill
to carry the car over the second hill?76
A periscope works by using the reflection of mirrors. Sara made several periscopes
for watching baby birds in a nest.Which periscope will work?
77
Which picture shows the book with themost potential energy? 78
This instrument can beused to see if materialsconduct electricity.Which of these groupscontains items that couldall conduct electricity to complete the circuit?
Rubber ball, plastic comb, nail
Paper clip, penny, screw
Cork, dollar bill, tweezers
Pencil, eraser, spoon79
Which form of energy is best shown in this picture?
mechanical electrical
chemical nuclear80
The picture shows a comb that was used ona cold, dry day. Which of these cause thebits of paper to be attracted to the comb?
Magnetic forces Static electricity
Chemical reactions Heat differences81
Many electricalwires are wrappedwith a plastic coatingbecause plastic is …
a good insulator.
less expensive than steel.
able to keep its shape.
more dense than copper.
82
Which of these best showskinetic energy? 83
Blowing through a straw willproduce a sound. Which straw will
make the highest pitch?
84
According to thisfood web, which typeof animal will die outif all of the mice andvoles are killed?
Owls
Snakes
Rabbits
Hawks85
From where does the energyfor this ocean food chain come?
Ocean waves The sun
Whales Salt86
The eyespots onthis butterfly’s
wings allowit to …
stay warm.
locate nectar-filled flowers.
fly away quickly.
frighten or confuse enemies.87
live in warmer areas of its habitat.
eat pond grass and algae.
go through the process of photosynthesis.
eat the valve snail or the mosquito larva.
In order for energy to flowthrough this food web fromthe sun to the yellow perch,the perch must …
88
Wave action againstsolid rock can causechanges in the rockstructure. What is the correct sequenceof erosion of these rock surfaces?
D, B, C, A B, C, D, A
A, B, C, D D, C, B, A89
This girl is lookingat the flag early in the morning. Thesun rises in the east.In which direction isshe facing?
North East
South West90
Rocks which formed in areas once coveredby oceans often contain fossils of animals
which lived in the sea. Which of theserocks contains fossils of ocean animals?
91
Which of the following is the next phase of the moon?
92
If this device wasplaced outside,it could be usedto show…
changes in temperature.
the amount of rainfall.
changes in humidity.
the speed of the wind.93
The diagrams show how a rivercan cause the erosion of land.Which sequence of letters bestshows how the river has agedfrom youngest to oldest?
A, B, D, C
D, A, B, C
A, D, B, C
C, B, D, A94
The time between today’s sunriseand tomorrow’s sunrise
would be about …
12 hours
24 hours
36 hours
48 hours 95
Geologists learn whatorganisms were like in the past
by studying …
minerals
water
fossils
atmosphere96
Which of these best shows that
the Earth revolvesaround the sun asthe moon revolvesaround the Earth?
97
What is the length of the tadpole?
2.8 cm 3.1 cm
3.5 cm 4.0 cm98
Which of theseanimals eats aphids?
Grasshoppers
Snails
Lizards
Ladybugs99
What causes the seasonson Earth?
movement of Earth around the Sun
movement of the Sun around the Earth
tilting of the Earth’s axis
rotation of the Earth on its axis100
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