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WorksheetsCFE Practice Test
Total questions: 46
Worksheet time: 2hrs 32mins
Name
Class
Date
1.
SC.912.L.18.12 – Which property of water best describes why water can store lots of thermal energy without large changes in temperature?
a)
polarity
b)
high specific heat (4.184 joules per gram degree Celsius)
c)
high surface tension
d)
water’s boiling point is 100˚C
2.
SC.912.N.1.1 – During an experiment, a doctor gives a patient a blue pill each day and tells them to meditate one hour each day. After a week of treatment, the patient feels better. Which of the following choices best describes a valid conclusion the doctor can make about the effectiveness of the blue pill?
a)
It worked. The medicine is effective.
b)
It didn’t work. The medicine is ineffective.
c)
The meditation was more effective than the blue pill.
d)
It’s impossible to tell because there was no control variable.
3.
SC.912.N.1.1 – Jada is trying to determine which fertilizer is best for making her sunflowers grow quickly. She creates an experiment in which she creates four groups of sunflower plants: three that are planted in different brands of fertilizer and one that is planted in ordinary soil from her backyard. She waters each plant the same amount and at the same time of day. After one month has passed, she measures the average height of each group of plants. What type of experimental variable was the choice of different fertilizers?
a)
control
b)
dependent
c)
independent
d)
physical constant
4.
SC.912.P.8.2 – Which of the following is a physical property of matter?
a)
pH
b)
polarity
c)
melting point
d)
oxidation reactivity
5.
SC.912.P.8.2 – During an experiment, Marina mixes two ingredients together. As these ingredients mix, she observes that the mixture changes color, creates a gas, and begins to warm up. Based on these clues, what type of overall change has Marina observed?
a)
physical
b)
chemical
c)
endothermic
d)
reversible
6.
SC.912.P.8.4 – Which of the following choices correctly compares and contrasts neutrons and protons?
a)
Neutrons are significantly more massive than protons, and are located in the nucleus.
b)
Neutrons and protons have roughly the same mass, and are located in the nucleus.
c)
Neutrons are significantly less massive than protons, and are located outside of the nucleus.
d)
Neutrons and protons have roughly the same mass, and are located outside of the nucleus.
7.
SC.912.P.8.5 – Which of the following statements is true regarding different elements on the periodic table?
a)
Different elements in the same row likely have similar chemical properties.
b)
Different elements in the same row likely have identical physical properties.
c)
Different elements in the same column likely have similar chemical properties.
d)
Different elements in the same column likely have identical physical properties.
8.
SC.912.P.8.5 – Which of the following statements correctly describes how elements are organized on the periodic table?
a)
The farther down the table an element is, the more massive its atoms are.
b)
The farther down the table an element is, the less dense its atoms are.
c)
Non-metals are found on the left side of the periodic table, and metals are on the right.
d)
Elements in the same row on the periodic table have similar chemical properties.
9.
SC.912.P.8.7 – Ethane, C2H8, does not dissolve in water easily. Based on this, what types of bonds/forces are most likely to be responsible in holding together the atoms in an ethane molecule?
a)
ionic bonds
b)
covalent bonds
c)
hydrogen bonds
d)
polar covalent bonds
10.
The chemical formula for glucose is C6H12O6. Based on this formula, what type of substance is glucose?
a)
atom
b)
element
c)
compound
d)
mixture
11.
SC.912.P.8.8 – What type of chemical reaction is characterized by two or more reactants forming one product?
a)
synthesis
b)
combustion
c)
decomposition
d)
single replacement
12.
SC.912.P.8.8 – The following equation represents a typical form of a chemical reaction: AB + CD → AD + BC Based on this typical equation, what type of chemical reaction is being represented?
a)
synthesis
b)
combustion
c)
single replacement
d)
double replacement
13.
SC.912.P.10.1 – A 100kg cart is 10 meters off the ground on a roller coast track. The other side of the track goes up infinitely. Assume the track is a frictionless surface. If the cart starts rolling down the track, how far up will it go on the other side before it stops and falls back down again?
a)
less than 10 meters
b)
exactly 10 meters
c)
more than 10 meters
d)
it's impossible to tell because you don't have enough information
14.
SC.912.P.10.1 – Which of the following statements correctly describes energy transformation?
a)
It is possible to create brand new energy, but it’s not possible to destroy energy.
b)
It is possible to destroy energy, but it’s not possible to create new energy.
c)
Energy can be created or destroyed as needed (e.g., when you plug in your phone to charge it).
d)
It is neither possible to create, nor destroy energy. Total energy always remains the same before and after a transformation.
15.
SC.912.P.10.3 – Joshua pushes a block with a force of 20 Newtons along a surface for a distance of 5 meters. How much work did he do? Recall that: 𝑊𝑜𝑟𝑘 = 𝐹𝑜𝑟𝑐𝑒 ∙ 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒
a)
4 joules
b)
20 joules
c)
25 joules
d)
100 joules
16.
SC.912.P.10.3 – Jessica lifts a box with a mass of 10 kilograms up 2 meters from the surface of the Earth. How much work did she do? Recall that the acceleration due to gravity is 10 meters per second2, , that 𝐹𝑜𝑟𝑐𝑒 = 𝑚𝑎𝑠𝑠 ∙ 𝑎𝑐𝑐𝑒𝑙𝑒𝑟𝑎𝑡𝑖𝑜𝑛, 𝑊𝑜𝑟𝑘 = 𝐹𝑜𝑟𝑐𝑒 ∙ 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 and that the unit of work is called the joule.
a)
100 joules of work
b)
200 joules of work
c)
22 joules of work
d)
2000 joules of work
17.
SC.912.P.10.4 – A turkey is cooking inside an oven. Although the pan is hot, the majority of the heat transferring into the turkey comes from the warm air inside the oven. What type of heat transfer happens due to moving air currents?
a)
radiation
b)
convection
c)
conduction
d)
specific heat
18.
SC.912.P.10.4 – When Tomas places his hand underneath his desk lamp, his hand begins to feel warm. What type of heat transfer occurs due to light waves?
a)
radiation
b)
convection
c)
conduction
d)
specific heat
19.
SC.912.P.10.5 – Bill uses some really cold liquid nitrogen to make ice cream. As he pours the nitrogen into the cream and sugar mixture, it begins to solidify. What is happening to the molecules inside the ice cream?
a)
The atoms are losing mass.
b)
The atoms are becoming stronger.
c)
The atoms are wiggling in place, but slowing down.
d)
The atoms stop moving completely.
20.
SC.912.P.10.7 – The Inuit people of northern Canada recommend eating seal blubber to stay warm. Based on this, what type of chemical reaction is the digestion of seal blubber?
a)
exothermic reaction
b)
exoskeletal reaction
c)
endoscopic reaction
d)
endothermic reaction
21.
SC.912.P.10.7 – Cristiano is playing soccer, when he accidentally runs into a teammate and gets injured, flopping to the ground uselessly in pain. His coach runs out to help him, using a cold pack to help reduce the swelling of the nasty bruise Cristiano just received. As the chemicals in the cold pack mix, the mixture becomes very cold very quickly. Based on this description, what type of chemical reaction is happening in the cold pack?
a)
exothermic reaction
b)
exoskeletal reaction
c)
endoscopic reaction
d)
endothermic reaction
22.
SC.912.P.10.10 – Which of the four fundamental forces is responsible for binding nucleons together in the nucleus?
a)
gravity
b)
electromagnetism
c)
weak force
d)
strong force
23.
SC.912.P.10.11 – Which type of nuclear reaction results in the breakdown of unstable nuclei into smaller nuclei and high energy particles, over a long period of time?
a)
nuclear fission
b)
nuclear fusion
c)
radioactive decay
d)
radioactive fusion
24.
SC.912.P.10.11 – Which type of nuclear reaction results in the formation of a new heavy nucleus from smaller, lighter nuclei that combine together?
a)
nuclear fission
b)
nuclear fusion
c)
radioactive decay
d)
radioactive fusion
25.
SC.912.P.10.14 – Rubber does not allow electrons to flow easily across its surface. Based on this description, what is rubber?
a)
insulator
b)
conductor
c)
semiconductor
d)
semi-insulator
26.
SC.912.P.10.14 – A new experimental material used allows electrical current to flow across its surface, but not nearly as well as a metal material would allow. Based on this description, what type of material has been created?
a)
An insulator
b)
A conductor
c)
A semiconductor
d)
A semi-insulator
27.
SC.912.P.10.15 – A six volt battery is connected by a wire to a two ohm resistor. How many amps of current flow through the wire?
a)
3 amps
b)
0.33 amps
c)
8 amps
d)
4 amps
28.
SC.912.P.10.18 – As light enters a dense transparent medium like water, it is absorbed and retransmitted by the molecules of the medium. This process of absorption and retransmission takes a little bit of extra time, so in a dense medium light will slow down. Higher frequency waves slow down less than lower frequency waves, so the wave appears to spread out and make a spectrum. What is this process called?
a)
reflection
b)
refraction
c)
absorption
d)
spectroscopy
29.
SC.912.P.10.18 – Which of the following explanations best describes why grass appears to be green?
a)
White light from the sun hits the grass, which then absorbs the green wavelengths from that white light.
b)
White light from the sun hits the grass, which absorbs all wavelengths of light except green, which is the color that is reflected back to the eye.
c)
The sun only shines green light at grass, which is why grass appears to be this color.
d)
Grass contains a chemical called chlorophyll, which absorbs green light in order to let plants do photosynthesis.
30.
SC.912.P.10.21 – As a race car zooms away from Jack, the driver honks his horn. According to the Doppler effect, how would the sound of the horn seem like according to Jack, compared to the driver?
a)
Jack and the driver would hear the same sound.
b)
Jack would hear a higher pitch sound than the driver would hear.
c)
Jack would hear a lower pitch sound than the driver would hear.
d)
Jack would hear a sound wave with a shorter wavelength than the driver would hear.
31.
SC.912.P.12.2 – What would the slope of a line on an acceleration-time graph look like for an object that is moving with constant velocity?
a)
The slope would be a curve like this: J
b)
The slope would be a straight horizontal line: -
c)
The slope would be a straight diagonal line in this direction: \
d)
The slope would be a straight diagonal line in this direction: /
32.
SC.912.P.12.2 – Which of the following scenarios would be correctly represented by an distance-time graph that shows an upwards curved line like this: J ?
a)
A vehicle that is moving with constant speed toward a detector.
b)
A vehicle that is accelerating away from a detector.
c)
A vehicle that is not moving.
d)
A vehicle that is moving with constant speed away from a detector.
33.
SC.912.P.12.3 – Which of Newton’s laws explains that an object in motion will continue moving unless acted upon by an outside unbalanced force?
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
d)
Newton's Law of Universal Gravitation
34.
SC.912.P.12.3 – Which of Newton’s laws enshrines Galileo’s Principle of Inertia?
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
d)
Newton's Law of Universal Gravitational
35.
SC.912.P.12.7 – Scientists recently announced that they had discovered small massive particles called neutrinos that apparently moved faster than the speed of light. Much of the scientific community was intrigued, baffled and doubtful of this result. Why would this result be unlikely to be true?
a)
Neutrinos are a well-known hoax.
b)
Nothing travels faster than light through a medium.
c)
Nothing travels as fast or faster than light in a vacuum.
d)
It is true and absolutely likely that neutrinos can go faster than light speed.
36.
SC.912.P.12.7 – When Tom and Kate attempt an experiment. Tom gets on his skateboard and starts coasting past Kate at 3 meters per second. When Tom throws a Frisbee in front of him, he throws it an additional 7 meters per second. Tom sees the Frisbee moving away from him at 7 meters per second, but relative to Kate the Frisbee appears to be moving at 10 meters per second. They decide to repeat the experiment, but this time they use a flashlight instead of a Frisbee. According to the principles first described by Einstein, what will Tom and Kate both say about the speed of the light coming from the flashlight?
a)
Tom will say the light is travelling slower than what Kate sees.
b)
Tom will say the light is travelling faster than what Kate sees.
c)
Tom and Kate will both agree and measure the same speed of light.
d)
Tom will say that the light has more energy than what Kate sees.
37.
SC.912.P.12.10 – Assuming temperature is held constant and the quantity of gas doesn’t change, if you halve the pressure of a gas, what will happen to the volume of the gas?
a)
It will halve.
b)
It will double.
c)
It will quadruple.
d)
It will stay the same.
38.
SC.912.P.10.18 – Which of the following explanations best describes why grass appears to be green?
a)
White light from the sun hits the grass, which then absorbs the green wavelengths from that white light.
b)
White light from the sun hits the grass, which absorbs all wavelengths of light except green, which is the color that is reflected back to the eye.
c)
The sun only shines green light at grass, which is why grass appears to be this color.
d)
Grass contains a chemical called chlorophyll, which absorbs green light in order to let plants do photosynthesis.
39.
SC.912.P.12.11 – Molecules of an unknown sample are bouncing around rapidly. The intermolecular attractive forces between the molecules are almost zero. There is a large amount of space between the molecules. Based on this description, what state of matter is this unknown sample currently in?
a)
gas
b)
solid
c)
liquid
d)
melting from solid to liquid
40.
SC.912.L.18.12 – What property of water best describes why water can dissolve substances like salts relatively easily?
a)
Water molecules have non-polar bonds.
b)
Water molecules are relatively small.
c)
Water molecules have polar bonds.
d)
Water molecules are made up of three atoms.
41.
SC.912.P.8.4 – The famous scientist Ernest Rutherford and his team of researches is remembered for correctly describing how charge and mass is distributed in an atom. Which of the following statements correctly describes the distribution of mass in an atom?
a)
Most of the mass of an atom is located in the electron cloud.
b)
Most of the mass of an atom is located in the nucleus.
c)
The mass of an atom is evenly distributed throughout all regions of an atom.
d)
The mass of an atom is concentrated only in the neutrons.
42.
SC.912.P.10.5 – A sword is heated inside a blacksmith’s forge until it glows red hot. What is happening to the molecules of iron inside the blade?
a)
The iron atoms are gaining mass.
b)
The iron atoms are becoming stronger.
c)
The iron atoms are wiggling in place quickly.
d)
The iron atoms are hard now, and do not move.
43.
SC.912.P.10.10 – Which of the following statements correctly compares and contrasts the strong force with electromagnetism?
a)
The strong force basically only works inside the nucleus of an atom, but electromagnetism has a much longer range.
b)
Electromagnetism basically only works inside the nucleus of an atom, but the strong force has a much longer range.
c)
The strong force works between electrons and neutrons, but electromagnetism only works on electrons.
d)
The strong force works between electrons and protons, but electromagnetism works on electrons, protons and neutrons.
44.
. SC.912.P.10.15 – Ohm’s law describes the relationship between voltage, current and resistance. Unfortunately, it doesn’t perfectly describe the behavior of a circuit because as current flows, the circuit heats up, and as it heats up, resistance drops. Assuming voltage stays the same and resistance drops by half, what will happen to current, ignoring any temperature changes?
a)
It will halve.
b)
It will double.
c)
It will quadruple.
d)
It will stay the same.
45.
SC.912.P.10.21 – Red light is lower frequency than blue light. Many of the stars in the night sky are redder than one would expect. According to the Doppler effect, why are those stars more red?
a)
They are weaker than normal stars.
b)
They are moving towards us and accelerating.
c)
They are moving towards us with constant velocity.
d)
They are moving away from us with constant velocity.
46.
. SC.912.P.12.11 – What type of material has particles that are in constant contact with each other, but slip and slide past one another freely?
a)
gas
b)
liquid
c)
solid
d)
crystal
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