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- 1. Multiple Choice
The graph below represents the motion of a cart. How does the speed of the cart compare when t = 6 s and t = 12 s?
The speed of the cart at 6 s is greater than when time equals 12 s.
The speed of the cart at 6 s is less than when time equals 12 s.
The speed of the cart is 0.5 m/s at 6 s and 12 s.
The speed of the cart is 2 m/s at 6 s and 12 s
- 2. Multiple Choice
The chart below represents the change in velocity for four different trains. If it took 5.38 s to reach the final velocity, which train had the greatest
acceleration?
W
X
Y
Z
- 3. Multiple Choice
Why does a flat piece of notebook paper take longer to reach the ground than an
identical piece of notebook paper crumpled into a ball?
The flat piece of paper has more mass.
The crumpled piece of paper has more mass.
The frictional force of air has more effect on the falling flat piece of paper
The frictional force of air has more effect on the falling crumpled piece of
paper.
- 4. Multiple Choice
Why does the weight of an object change with increasing elevation on Earth?
The mass of the object decreases with higher elevation.
The force of gravity acting on the object increases with higher elevation
The force of gravity acting on the object decreases with higher elevation.
The mass of the object increases with higher elevation.
- 5. Multiple Choice
Which type of friction occurs when an eraser is rubbed across a sheet of paper?
rolling
sliding
static
fluid
- 6. Multiple Choice
Two students pull on the opposite ends of a rope, but neither student is able to
move the other. Which statement best explains why neither student is moved?
They each pull on the rope with the same amount of force, so the net force is zero
They each exert the same amount of friction against the ground, so the net friction is zero
Their forces are not balanced, but gravity keeps them from moving.
The two students have the same mass.
- 7. Multiple Choice
The diagram below shows a board on top of two bricks with a cylinder on top of the board. The board exerts an upward force of 50 N. Which best explains this situation?
The board has a weight of 50 N.
The cylinder has a weight of 50 N.
The combined weight of the two bricks is 50 N.
The combined weight of the bricks, board, and cylinder is 50 N.
- 8. Multiple Choice
Which is an example of a mixture
iron filings
copper wire
bronze pipe
titanium metal sheet
- 9. Multiple Choice
The chart below shows the density of five gases. A gas has a volume of 4.52 L. If its mass is 8.05 g, what is the identity of the gas?
;helium
neon
argon
krypton
- 10. Multiple Choice
This graph shows the solubility curves for various ionic compounds .At which temperature does KCl have the same solubility as CuSO4?
18°C
38°C
73°C
100°C
- 11. Multiple Choice
This is an electron dot diagram: Which element is represented?
boron
sulfur
phosphorus
bromine
- 12. Multiple Choice
This diagram represents a neutral atom of boron-11. How many protons and neutrons does boron-11 have?
11 protons, 11 neutrons
11 protons, 0 neutrons
6 protons, 5 neutrons
5 protons, 6 neutrons
- 13. Multiple Choice
Which two elements have the same number of valence electrons?
C and O
Na and Mg
Cl and F
Ga and Ge
- 14. Multiple Choice
Some coins are alloys of zinc (Zn) and copper (Cu). Which type of bond forms
these coins?
covalent
hydrogen
metallic
ionic
- 15. Multiple Choice
How can two different nonmetals form a compound?
by sharing protons
by sharing electrons
by transferring electrons
by transferring protons
- 16. Multiple Choice
Which is the chemical formula for magnesium hydroxide
Mg(OH)2
MgOH
MgOH2
Mg2OH
- 17. Multiple Choice
Which is the correct name for the compound NaNO3?
sodium nitrate
sodium nitrous acid
sodium nitrogen oxide
sodium nitrogen trioxide
- 18. Multiple Choice
This equation represents an unbalanced chemical reaction.
NaI + Cl2 NaCl + I2
When the equation is balanced, which coefficient should be placed before NaCl?
2
3
4
5
- 19. Multiple Choice
This equation represents a balanced chemical reaction
BaI2 + H2SO4 = 2HI + BaSO4
double replacement
single replacement
synthesis
decomposition
- 20. Multiple Choice
Which group is in order of increasing ability to penetrate an object?
alpha, beta, gamma
gamma, alpha, beta
beta, alpha, gamma
gamma, beta, alpha
- 21. Multiple Choice
A 100-gram sample of radium-226 has a half-life of 1,600 years. How long will it take before there are only 12.5 grams of the radioactive radium-226 remaining?
1600 years
3200 years
4800 years
6400 years
- 22. Multiple Choice
Why does a student’s hand feel cold when holding an ice cube
Heat flows from the ice cube to the hand
Heat flows from the hand to the ice cube.
Cold flows from the hand to the ice cube.
Cold flows from the ice cube to the hand
- 23. Multiple Choice
What happens to the molecules in a pot of water as it is heated?
they move faster
they move slower
They lose thermal energy.
They gain potential energy.
- 24. Multiple Choice
Two boxes, X and Y, are on a shelf 10 meters above the floor. Box X has a mass of 4 kg, and Box Y has a mass of 8 kg. Which statement best represents the relationship between boxes X and Y?
Box X and Box Y have no potential energy.
Box X has less potential energy than Box Y.
Box X has more potential energy than Box Y.
Box X and Box Y both have 784 J of potential energy.
- 25. Multiple Choice
Which describes the kinetic energy of a ball in free fall?
The kinetic energy remains the same while the velocity increases.
The kinetic energy decreases because the velocity increases.
The kinetic energy increases because the velocity increases.
The kinetic energy remains the same while the velocity decreases.
- 26. Multiple Choice
How do radio waves and visible light waves differ?
Radio waves have a shorter wavelength than visible light waves.
Radio waves move faster than visible light waves.
Radio waves have a lower frequency than visible light waves.
Radio waves have more energy than visible light waves.
- 27. Multiple Choice
The diagram below represents a wave pattern. Which type of wave is represented?
compression/ longitudinal
transverse
sound wave
primary wace
- 28. Multiple Choice
Object X and Object Y are rubbed together. Object X acquires a negative charge. What does Object Y experience?
a gain of protons
a loss of protons
a gain of electrons
a loss of electrons
- 29. Multiple Choice
Which is a true statement about a series circuit?
All the current flows through every part of the circuit.
Every part of the circuit is positively charged.
The current through the circuit can take several paths.
Every part of the circuit is negatively charged.
- 30. Multiple Choice
This diagram represents a circuit with three 20-ohm light bulbs. The battery is 10 volts. If light bulb 3 burns out in the circuit, what will happen to light bulb 1 and light
bulb 2?
Light bulb 1 and light bulb 2 will work.
Light bulb 1 and light bulb 2 will not work.
Light bulb 1 will work, but light bulb 2 will not work.
Light bulb 1 will not work, but light bulb 2 will work
- 31. Multiple Choice
A student wants to build a simple circuit. Which material would be used to design
a circuit with the least amount of resistance?
long wires with a thin diameter
long wires with a large diameter
short wires with a thin diameter
short wires with a large diameter
- 32. Multiple Choice
Two magnets are stuck end to end by a magnetic force. Which statement best
describes these magnets?
The north poles of the magnets are attracted to each other
The south poles of the magnets are attracted to each other.
The south pole of one magnet is repelled by the north pole of the other
magnet.
The north pole of one magnet is attracted to the south pole of the other
magnet.
- 33. Multiple Choice
Which action will have the least effect on the strength of an electromagnet?
changing the amount of current
changing the current’s direction
changing the number of wire loops
changing the size of the metal core
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