Clicker Review Game

STAR Practice 2010-2011CST Release Questions

Please click on your table number.

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1. Table 12. Table 23. Table 34. Table 45. Table 56. Table 67. Table 78. Table 8

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The graph below shows the movement of an object at several points in time. What is the average speed

of the object?

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1. 0.5 m/min2. 2 m/min3. 25 m/min4. 50 m/min

Data from an experiment are presented below. At 0.6 s, what is the distance the object has

traveled?

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1. 0.5 m/min2. 2 m/min3. 25 m/min4. 50 m/min

A spring scale is pulled downward and readings are recorded.

If the spring is pulled 3.5 cm, the spring scale should read

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1. 12 N2. 13 N3. 14 N4. 15 N

A student records the mass and volume of a lump of clay, x. Next, a second lump of clay, y, is added to lump x, and the combined (x + y) mass and volume are recorded. Finally, a third lump of clay, z, is added to the combine (x + y) mixture, and the final

(x + y + z) mass and volume are recorded, as shown below.

What is the most logical conclusion about the clay used in this investigation?

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1. Lump z had the greatest mass.2. Lump z had the lowest density.3. Lump y had the lowest density.4. Lump y had the greatest mass

Red-clay bricks have a density of approximately 2000 kg/m3. Air has a density of 1 kg/m3. Which of the

following has the lowest mass?

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1. 2 m3 of bricks2. 4 m3 of bricks3. 6000 m3 of air4. 10,000 m3 of air

An athlete can run 9 kilometers to 1 hour. If the athlete runs at at that same average speed for 30

minutes, how far will the athlete travel?

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1. 18 kilometers2. 9 kilometers3. 4.5 kilometers4. 3.3 kilometers

How much time is required for a bicycle to travel a distance of 100 m at an average speed of 2 m/s?

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1. 0.02 s2. 50 s3. 100 s4. 200 s

Which of the following represents the velocity of a moving object?

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1. 402. 40 m north3. 40 m/s4. 40 m/s north

Which characteristic of motion could change without changing the velocity of an object?

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1. the speed2. the position3. the direction4. the acceleration

The graph shows how the position of an object changes over time. What is the speed of the object during the time interval from 4 seconds to 10

seconds?

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1. 2 m/s2. 3 m/s3. 8 m/s4. 16 m/s

The graph shows the speed of a vehicle over time. How far did the

vehicle travel during the first two seconds?

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1. 0.2 m2. 5 m3. 10 m4. 20 m

A force is acting on each of the objects below.

What can be concluded about these forces?

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1. They are the same because they point toward the object

2. They are the same because they have the same magnitude

3. They are different because they have different magnitudes

4. They are different because they have different directions

Two student are pushing a cart, as shown below.

The cart will move as if it were acted on by a single force with a magnitude of?

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1. 50 N2. 150 N3. 200 N4. 350 N

A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces become equal in magnitude, the ball will

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1. flatten due to the forces2. fall at a constant speed3. continue to speed up4. slow to a stop

Four forces are acting on a box, as shown below.

The box will increase in speed

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1. downward and to the left2. downward and to the right3. upward and to the left4. upward and to the right

A force of 5 N is required to increase the speed of a box from a rate of 1.0 m/s to 3.0 m/s within 5 s along a level surface. What change would most likely require additional force to

produce the same results?

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1. Reduce the mass of the box2. Increase the mass of the box3. Make the surfaces of the box smooth4. Make the surface of the floor smooth

What is the density of a 64-g iron cube that displaces 8 mL of water?

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1. 512 g/mL2. 32 g/mL3. 8 g/mL4. 4 g/mL

A piece of pine wood floats on the surface of a lake because the water exerts

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1. An upward force equal to the weight of the wood.

2. A downward force equal to the weight of the wood.

3. An upward force equal to the weight of the displacement water

4. An downward force equal to the weight of the displacement water

The following table shows properties of four different sample materials. One of these materials is cork, a type of wood that floats in water.

Given that the density of water is 1 g/mL, which of the samples is most likely cork?

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1. 12. 23. 34. 4

The densities of four different woods are shown below.

Which wood will sink when placed in a fluid with a density of 1.14 g/cm3?

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1. African teakwood2. balsa3. cedar4. ironwood

Which of the following best describes an atom?

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1. protons and electrons grouped together in a random pattern

2. protons and electrons grouped together in a alternating pattern

3. a core of protons and neutrons surrounded by electrons

4. a core of electrons and neutrons surrounded by protons

Which of the following is found farthest from the center of an atom?

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1. nucleus2. proton3. neutron4. electron

When magnesium (Mg) metal is burned in the presence of oxygen (O2), magnesium oxide (MgO) is produced. The

properties of magnesium oxide are different than the individual properties of magnesium and oxygen because

magnesium oxide is

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1. a solution2. a mixture3. a compound4. an element

Within a substance, atoms that collide frequently and move independently of one

another are most likely in a

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1. liquid2. solid3. gas4. crystal

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1. carbon2. calcium3. chromium4. copper

What is the name of the indicated atom in the acetic acid molecule

shown below?

Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols

for the two elements found in iron oxide?

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1. I and O2. Ir and O3. Fe and O4. Pb and O

What do the elements sulfur (S) nitrogen (N), phosphorus (P), and bromine (Br) have in common?

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1. They are noble (inert) gases.2. They are nonmetals.3. They have the same thermal

conductivity.4. They have the same number of protons.

A diagram of the periodic table of the elements is shown below.

In which region of the table would nonmetals be found?

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1. 12. 23. 34. 4

The table below shows the atomic mass of four stable calcium (Ca) isotopes.

What characteristic is different in each isotope?

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1. the position in the periodic table of the elements

2. the net charge of the nucleus3. the mass of the protons in the nucleus4. the number of neutrons in the nucleus

Which class of elements best conducts electricity?

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1. metals2. nonmetals3. semimetals4. noble (inert) gases

In comparison of metals to nonmetals, metals tend to have

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1. lower melting points and greater conductivity than nonmetals.

2. lower conductivity and lower density than nonmetals.

3. higher density and lower melting pints than nonmetals.

4. Greater conductivity and higher melting points than nonmetals.

A student divides several cubes into two groups, based on whether or not each cube can float in water.

What property is the student using to classify the cubes?

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1. weight2. density3. conductivity4. mass

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The galaxies pictured below would best be classified as

1. barred galaxies2. spiral galaxies3. irregular galaxies4. symmetrical galaxies

A galaxy is best described as a cluster of

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1. hundreds of stars.2. thousands of stars.3. millions of stars4. billions of stars

To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit

of measurement is the

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1. meter.2. kilometer.3. light-year.4. astronomical unit.

Which of the following sets contains only objects that shine as a result of reflected light?

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1. moons, planets, and comets2. moons, comets, and stars3. planets, stars, and comets4. planets, stars, and moons

An object composed mainly of ice is orbiting the Sun in an elliptical path. This object is most likely

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1. a planet.2. an asteroid.3. a meteor.4. a comet.

Copper (Cu) reacts with oxygen (O) to form copper oxide (CuO). The properties of CuO are most likely

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1. different from copper or oxygen.

2. similar to both copper and oxygen.

3. similar only to copper.4. similar only to oxygen.

The following equations represent chemical reactions.

Which equation shows that the total mass during a chemical reaction stays the same?

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1. 12. 23. 34. 4

Which of the following forms of energy is released or absorbed in most chemical reactions?

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1. light energy2. electrical energy3. sound energy4. heat energy

As a sample of water turns to ice,

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1. new molecules are formed.2. the mass of the sample is

increased.3. the arrangements of the

molecules changes.4. energy is absorbed by the

molecules.

The table below shows the pH and reaction to litmus of four body fluids.

These data indicate the gastric juice is

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1. very acidic.2. very basic3. positively charged4. pegatively charged

What characteristic of carbon ( C) makes it essential to living organisms?

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1. Carbon forms crystal structures under certain conditions.

2. Carbon can exist as a solid, liquid, or gas.

3. Carbon bonds in many ways with itself to form chains.

4. Carbon exists in radioactive forms.

Which of the following elements is best able to combine with itself and hydrogen (H) to form large

molecules?

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1. sodium (Na)2. lithium (Li)3. sulfur (S)4. carbon (C)

Which of the following compounds is most likely to be part of living organisms?

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1. C6H12O6

2. BF3

3. MoCl2

4. CsI