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Student Name: _______________________ Date: _________Teacher Name: Talithia Davis Score: _________

11)) Which statement is true?

A) All waves travel at the same speed through any medium.

B) All waves travel at the same speed if no medium is present.

C) Electromagnetic waves require a medium, but mechanical waves do not.

D) Mechanical waves require a medium, but electromagnetic waves do not.

22))

The light bulb converts electrical energy into light and _________.

A) chemical

B) electromagnetic

C) heat

D) nuclear

33))

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1 of 22 11/20/15, 10:02 AM

The sun's heat reaches Earth by what means?

A) conduction

B) convection

C) insulation

D) radiation


2 of 22 11/20/15, 10:02 AM

44)) In an experiment, Seth was given a substance known as ammonium carbonate, (NH4)2CO3. Seth connected a bunsen burner to the

gas valve using a gas hose. He turned on the gas valve and lit the bunsen burner. Using a test tube, Seth heated a piece of

ammonium carbonate. Seth noticed the following:

- Condensation appeared on the sides at the top of the test tube.

- An ammonia smell was coming from the test tube.

Seth continued to light a wooden splint and stick it down the test tube and it immediately was extinguished.

Throughout this experiment, how many signs of chemical changes were observed and actual chemical changes took place?

A) 4

B) 5

C) 6

D) 7

55))

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((nneewwttoonnss))

LLooaadd

((nneewwttoonnss))

A 30 100

B 25 100

C 45 100

D 40 100

A block-and-tackle is a machine that uses pulleys to help lift heavy items. A person pulls on one end of a rope with an effort

force. The other end is attached to the item, or load. The table shows the results of testing several block-and-tackle designs to

pull the load one meter off the ground.

Which design has the GREATEST efficiency?

A) block-and-tackle A

B) block-and-tackle B

C) block-and-tackle C

D) block-and-tackle D

66))

Consider the law of gravitational attraction. Two spheres with a mass, M, are attracted to each other by a force, F. If the distance

between the two spheres doubles while the masses remain constant, will the force between the two spheres change? If yes, how?

A) Yes, the force decreases by 1/4.

B) Yes. The force decreases by 1/2.

C) Yes, the forces decreases by 1/16.


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D) No. The force remains constant because the masses remain constant.

77)) It was a sunny and windy day. Lamar wanted to draw a picture on the sidewalk using chalk. He noticed that the sidewalk felt very

hot.

What heated the sidewalk?

A) the blowing wind

B) the bright sunlight

C) Lamar standing on it

D) other kids playing on it


4 of 22 11/20/15, 10:02 AM

88)) Electrical energy can be transformed into other types of energy. We often experience this transformation of energy in our

everyday lives. Which example represents a conversion from electrical energy to light energy?

A)

B)

C)

D)

99)) Mixtures occur when two or more materials are combined and each material keeps its own properties. All of the following are

mixtures EXCEPT

A) Salad

B) Pizza


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C) Water

D) Chocolate milk

1100))

A screw is a type of simple machine. If we look closely at a screw, we see that it is really a _________ wrapped around a central core.

A) wedge

B) lever

C) fulcrum

D) inclined plane

1111))

In which picture(s) will you find a state of matter that has particles who have more energy than liquid water?

A) B and C

B) A, B, and C

C) B, C, and D

D) All of them

1122))


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In an experiment the chemical reaction between a piece of aluminum foil and Copper(II)Chloride solution in a beaker is

observed. The Aluminum seems to disapear over time. The balanced chemical equation is given by:

2 Al + 3 CuCl ⇒3 Cu +2 AlCl3

Can you predict the outcome of the same experiment when Aluminum is replaced with a more reactive element such as Silver?

A) No reaction would occur.

B) The silver would disappear but no solid precipitate would form.

C) The silver would disappear and a silver solid precipitate would form.

D) The silver would disappear and a brownish red solid precipitate would form.


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1133)) While running around the track at school, Milt notices that he runs due East on the 100m homestretch and due West on the

100m backstretch. To train for the 800m event, he runs both the 100m homestretch and the 100m backstretch in 12.2 seconds. How

do Milt's velocities on the homestretch and backstretch compare?

A) The homestretch and backstretch have velocities with the same magnitude only.

B) The backstretch velocity is greater in magnitude than the homestretch velocity.

C) The home stretch velocity is greater in magnitude than the backstretch velocity.

D) The homestretch and the backstretch have velocities with the same direction and magnitude.

1144)) Why is 18-karat gold considered a mixture rather than a pure substance?

A) It has a variable composition.

B) Its color is different than pure gold.

C) The gold atoms are not arranged in the a repeating pattern.

D) It can be melted and transformed into a different substance.

1155))

An amplifier was used to increase sound energy (loudness) of the wave at the top of the illustration so the sound could be heard in


8 of 22 11/20/15, 10:02 AM

an auditorium. Which wave is the result of amplification and produces a louder sound?

A)

B)

C)

D)

1166))

UUnnkknnoowwnn EElleemmeennttss

SSuubbssttaannccee AAppppeeaarraannccee MMeellttiinngg PPooiinntt ((ooCC)) EElleeccttrriiccaall CCoonndduuccttiivviittyy RReeaaccttiioonn wwiitthh HHCCll

A Black powder 3500o C None No reaction

B Reddish pellet 1360o C High No reaction

C Shiny silver strip 1200o C High Vigorous bubbling

D Dull gray pellet 620o C High Very slow bubbling

In a lab experiment, students had four samples of elements. They made observations about the appearance of each sample,

then proceeded to conduct three separate experiments. In the first, they found the melting point of each by holding small

samples in a Bunsen burner with a temperature probe. In the second, they held a conductivity probe to two separate sections

of the sample. In the final test, they reacted a small sample with hydrochloric acid and noted the results.

Which of these elements is most likely to be magnesium, the most metallic of all the samples?

A) A

B) B

C) C

D) D


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1177)) The law of conservation of energy states that

A) energy may be created, destroyed or transformed.

B) energy may be created, but only in certain types of nuclear reactions.

C) energy may neither be created nor destroyed; it may only be transformed.

D) the energy created by one process must be equal to that destroyed by another process.

1188))

If the symbol > is used to mean “a more-ordered particle arrangement” and the symbol < is used to mean “a less-ordered particle

arrangement,” which BEST shows the relationship between solids, gases, and liquids?

A) liquids > solids > gases

B) solids < liquids < gases

C) liquids > solids < gases

D) solids > liquids > gases

1199))

The distance, A, in the image represents

A) amplitude.

B) frequency.

C) period.

D) wavelength.

2200)) Sunlight is slowed MOST when traveling through


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A) water.

B) a vacuum.

C) the atmosphere.

D) None of these, as light always travels at the same speed.

2211)) A certain clock requires a weight lifted up once a day. The weight provides the energy that allows the clock to keep running.

Identify the transformation of that powers a grandfather clock.

A) It transforms kinetic energy into potential energy.

B) It transforms potential energy into kinetic energy.

C) It transforms potential energy into electrical energy.

D) It transforms electrical energy into potential energy.

2222)) Two cups of the same size are filled to the brim with clear liquids. Cup A holds water. Cup B contains alcohol. Your teacher

challenges you to figure out which cup holds water. Because of your great science knowledge, you know that all substances have

their own special properties. You and your lab partner add an ice cube to each cube. The ice floats in one liquid. You predict it is

water. And the ice sinks in the other liquid. You predict that liquid is alcohol. What property of matter did you use to identify the

liquids?

A) density

B) mass

C) texture

D) volume


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2233)) Elaborate on what can be learned about the properties by the location of element on the periodic table. Use atomic number 13

as an example.

A) It is a non-metal, has 3 valence electrons, becomes a cation with a -3 charge, and is brittle, moldable, and non-conductive.

B)It is a metalloid, has 3 valence electrons, becomes a cation with a -5 charge, and is workable, inelastic, and

non-conductive.

C)It is a main group metal, has 3 valence electrons, becomes a cation with a +3 charge, and is ductile, malleable, and

conductive.

D)It is a transition metal, has 1 valence electrons, becomes a cation with a +1 charge, and is ductile, malleable, and

conductive.

2244))

Which choice BEST represents the sound waves from a soft low-pitched train rumble that suddenly shifts to a loud, high-pitched

squeal of brakes?

A)

B)

C)

D)


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2255)) When two or more substances combine, but each keeps its own properties, the new combination is called a(an)

A) Element

B) Mixture

C) Compound

D) Homogeneous substance

2266))

A table has several directional compasses, several lengths of wire, an iron nail, a battery, an ammeter, a light bulb, a

permanent magnet, and a rubber eraser.

A student is asked to design an experiment to prove that a moving charge will produce a magnetic field. From the items on the

table, which items can be used together to design such an experiment?

A) A battery, an iron nail, and a wire.

B) A battery, a length of wire and a direction compass.

C) a battery, a permanent magnet and a directional compass.

D) a permanent magnet, a length of wire and a directional compass.

2277)) Donna and Dave were participating in a lab on the properties of water. First, they tried to see how many drops of water they

could fit on a penny. Then they dropped water and alcohol on waxed paper and observed what happened. Next they made a streak

of water and then alcohol on the lab bench. The alcohol streak dried up and disappeared first. Donna and Dave had to write an

explanation for everything that happened during the lab. How can they explain the disappearing alcohol?

A) Alcohol is flammable.

B) Alcohol has a lower boiling point than water.

C) Alcohol has a lower melting point than water.

D) Alcohol has a higher boiling point than water.


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2288))

As time passes, which of these is decreasing?

A) amplitude

B) crest

C) trough

D) wavelength

2299))

A car is traveling at a constant velocity of 60 km/h for 4 hours.

Choose the correct statement about the acceleration of the car.

A) The acceleration of this car is zero.

B) The acceleration of this car is positive.

C) The acceleration of this car is negative.

D) The acceleration of this car is 15 m

s.

3300))


14 of 22 11/20/15, 10:02 AM

The Venn diagram describes a phase change from solid to gas phase between the areas marked

A) B and C.

B) A and C.

C) A and B.

D) none of these

3311))

During science lab, some students added small pieces of magnesium ribbon to 10 mL of hydrochloric acid. They noticed that

bubbles formed, the test tube got hot, and the magnesium disappeared.

Which is a sign that a chemical reaction has taken place in this experiment?

A) change in odor

B) change in color

C) release of heat energy

D) disappearance of magnesium

3322)) The amount of gravitational force exerted on each other between two objects depends on their

A) mass and distance.

B) mass and diameter.

C) distance and volume.

D) distance and location.

3333)) Which tool is primarily classified as an inclined plane?

A) axe

B) crowbar

C) pulley

D) wheelbarrow


15 of 22 11/20/15, 10:02 AM

3344))

The force required to move an object or complete a task without a machine is often referred to as the output force. Machines

are devices that make tasks easier by decreasing the force required to complete a task, or by changing the distance or

direction of the effort force. An inclined plane is one of the most common of the six simple machines. When you see movers

carrying or pushing objects up a ramp into their moving van, you are seeing an inclined plane in use. In general, the force

required to lift an object is equal to an object’s weight. An inclined plane reduces the force required to move an object upward

against the pull of gravity.In this experiment students used a ramp, spring scale, and car to investigate how adjusting the

properties of the ramp can alter the effort force. They used a spring scale to pull the car and to measure the force (E) required

to move the car the length (L) of the inclined plane.

Experiment 1 – The students used a spring scale to measure the weight of the car and a wooden block placed atop the car.

They raised the end of a board to a height (H) of 25 cm above the lab bench. With a meter stick, they measured the length of

the board (L). Measurements were recorded in the data table. A spring scale was attached to one end of the car using string.

Holding the spring scale parallel to the inclined plane (board), one student pulled the car and weight up the board. The force

required was read on the spring scale and recorded in the data table as the effort force (E). Experiment 2 – A larger block was

used, and the ramp was raised to a height of 35 cm. The length remained the same and the experiment was repeated. Data

was recorded in the data table.Experiment 3 – Students replaced the original board with a board 100 cm long and used a

lighter block. The height was reset to 25 cm, and the experiment was repeated. Data was recorded in the data table.

Observations –

EExxppeerriimmeenntt RR ((NNeewwttoonnss)) EE ((NNeewwttoonnss)) LL ((ccmm)) HH ((ccmm))

11 8 3 75 25

22 10 4.5 75 35

33 6 1.8 100 25

One variable is controlled throughout the experiments. That is the

A) ramp length.

B) ramp surface.

C) height of ramp.

D) weight of wooden block.

3355)) You can find electric power lines under the ground by looking for magnetic fields at ground level. This is best explained by

which of these statements?

A) All wires have magnetic materials in them.

B) An electric current in a wire produces a magnetic field.

C) The power company puts magnets to help find the power lines.

D) The iron in the ground is disturbed by the power lines creating magnetic fields.

3366)) Why does the frequency of a siren get higher as an ambulance using that siren gets closer?


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A) As the ambulance gets closer, the sound waves slow down to reach the observer; so the frequency increases.

B) As the ambulance gets closer, the decreased distance creates less interference; so the frequency increases.

C) As the ambulance gets closer, the frequency of the sound waves is being stretched; so the frequency increases.

D) As the ambulance gets closer, the sound waves are compressed relative to the person; so the frequency increases.


17 of 22 11/20/15, 10:02 AM

3377))

Comparing Wave A (black) to Wave B (green), Wave A has a

A) higher crest.

B) higher frequency.

C) longer wavelength.

D) greater amplitude.

3388))

Brass is an alloy of copper and zinc. The two metals are melted, mixed, and then solidified. How would you BEST classify brass?

A) homogeneous mixture

B) heterogeneous mixture

C) pure substance: mixture

D) pure substance: compound

3399))


18 of 22 11/20/15, 10:02 AM

One disadvantage of this type of circuit is that

A) the addition of new light bulbs decreases resistance.

B) as more lights are added to the circuit, the voltage to each decreases.

C) as more lights are added to the circuit, the current to each increases.

D) when the current to one light is turned on, the current to the other lights turns off.

4400)) If white light falls on a piece of white paper in a dark room, the paper appears white to the eye. This is because the paper

reflects all the colors of light that fall on it. What color would the paper appear to be if red light falls on it?

A) black

B) pink

C) red

D) white

4411))

When light reaches a barrier or the edge of an opening it diffracts, which means that the light _________.

A) bends.

B) bounces back.

C) continues in the same direction.

D) is unable to continue traveling.

4422)) Have you heard an ambulance, police car, or fire truck recently? Did you notice that the pitch of the siren changed as it


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approached you and then again as it moved away? What concept explains this change or shift in sound waves?

A) Doppler effect

B) changes in speed

C) Bernoulli effect

D) changes in temperature


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4433)) Which of these reduces friction and makes the job of moving a refrigerator easier?

A) using a hand truck to roll the refrigerator

B) using cardboard to slide the refrigerator

C) using sand on the floor for better traction

D) using water on the floor so the refrigerator glides

4444))

The lever allows Jeff to lift a much greater weight because

A) the larger force is applied over a longer distance

B) the larger force is applied over a shorter distance

C) the smaller force is applied over a longer distance

D) the smaller force is applied over a shorter distance

4455))

Jenna made an electric circuit as seen in the picture. She placed a thermometer near her light bulb. After the light bulb was turned


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on for an hour, what did she MOST LIKELY observe?

A) The bulb glowed brighter over time.

B) The temperature in the thermometer went up.

C) The temperature in the thermometer went down.

D) Both the light and temperature remained the same over time.


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