Structures and Properties of Matter
Law of Conservation of Energy
Force, Mass, and Motion
Forces in Nature
Most Missed Questions on Unit Tests
100
Which part of the diagram represents a proton?
C
100
Marina is cooking soup in a pot on the stove. The pot is in direct contact with the stove. In this case, heat energy is transferred to the soup by
A) Radiation
B) Insulation
C) Conduction
D) Electricity
C) Conduction
100
The image shows two opposite forces acting on a rolling cart, what can we say is true about the effect of the forces on the cart?
A) it can't be determined without knowing which man is stronger
B) the forces are not balanced because one man is taller than the other
C) the forces are balanced. But, the forces acting on the cart have increased and the cart's motion is affected
D) The forces are balanced. Thus, there is no change in forces acting on the cart and the cart's motion is not affected.
D) The forces are balanced. Thus, there is no change in forces acting on the cart and the cart's motion is not affected.
100
After turning off the television, you approach it. As you get close, but not touching it, the hairs on your arm start to stand up. This is an excellent example of static charge built up by
A) conduction
B) convection
C) friction
D) induction
D) induction
100
This diagram shows a negatively charged balloon. When the charged balloon is brought near some pieces of paper, the papers are attracted to the balloon.
Which describes the charging of the pieces of paper?
A) positive due to induction
B) positive due to conduction
C) negative due to induction
D) negative due to conduction
A) positive due to induction
200
D
200
Burning logs in the fire place produce heat energy. The dog gets warm from the fire when heat energy is transferred by
A) the air
B) radiation
C) conduction
D) the flames
B) Radiation
200
During which interval of time was the student moving with constant, negative acceleration?
A) 7-9 min
B) 4.5-6 min
C) 0-2 min
D) 3-4.5 min
A) 7-9 min
200
A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?
A) the balloon will be repelled by the rod
B) the balloon will be attracted to the rod
C) the balloon will remain in place
D) the balloon will spin in circles
B) the balloon will be attracted to the rod
200
Students were given three graduated cylinders containing three different liquids: oil, water, and syrup. They were asked to predict what would happen when the three liquids were poured into one container. The majority of students said that the liquids would form a mixture. The liquids were poured into a jar and the results can be seen here. Explain what happened to the three liquids.
Density Identifies Matter
A) oil is lighter than water, water is lighter than syrup
B) the liquids formed three district layers because of varying masses
C) the liquids formed three district layers because of different densities
D) the liquids formed three distinct layers because of different densities
D) the liquids formed three distinct layers because of different densities
300
glass shattering into pieces
bubblegum being stretched
a piece of metal expanding due to heat
These are all examples of
A) Phase changes
B) Chemical Changes
C) Physical Changes
D) Temperature Changes
C) Physical Changes
300
Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. The loudness of Bettina’s voice was changed by what type of energy?
A) sound energy
B) mechanical energy
C) electrical energy
D) thermal energy
C) electrical energy
300
During a race, four competitors of the same weight rode identical bicycles for 10 minutes. Which bicycle stopped for a short drink break?
B) the red line
300
A student uses a piece of wool to charge a metal sphere. The student has to rub the sphere with the wool for several seconds to build up a charge.
Which of the following statements best describes this process?
- A) The sphere is positively charged with protons through induction.
- B) The sphere is negatively charged with electrons through friction.
- C) The sphere is negatively charged with electrons through induction.
- D) The sphere is positively charged with protons through friction.
- B) The sphere is negatively charged with electrons through friction.
300
When determining whether a chemical reaction has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction or chemical change has taken place?
A) solid melts
B) heat is given off
C) substance dissolves
D) substance changes shape
B) heat is given off
400
Based on your understanding of the periodic table which element has the greatest number of electrons?
A) Uranium (U)
B) Sodium (Na)
C) Selenium (Se)
D) Polonium (Po)
A) Uranium (U)
400
Which example involves the transformation of chemical energy directly into light energy?
A) a wind mill
B) a glow stick
C) photosynthesis
D) a hydroelectric dam
B) a glow stick
400
Based on the graph, during what time period is the race horse moving at the FASTEST speed?
A) 0-1 sec
B) 0-4 sec
C) 2-4 sec
D) 4-6 sec
C) 2-4 sec
400
Look at the diagram of the bar magnets below.
What will happen to the force between the two magnets if they are pulled farther apart?
A) the repelling force will remain the same
B) the attracting force will be stronger
C) the repelling force will be weaker
D) the attracting force will reverse the poles
C) the repelling force will be weaker
400
Two students move in the same direction with velocities that are shown in the graph.
Velocity vs. Time for Two Students
Velocity (m/s)
Time (min)
Based on the information in the graph, which statement describes the motion of the two students?
A) student 1 went a shorter distance than student 2
B) student 1 is traveling at a slower speed than student 2
C) student 2 changed direction between 3 and 4 minutes
D) student 2 maintained a constant velocity between 2 and 4 minutes
B) student 1 is traveling at a slower speed than student 2
500
These three members of the Noble gas family all have one property in common because they are gases at room temperature. That is they
A) Are combustible
B) Are compressible
C) Are relatively dense
D) Have no definite shape but a definite volume
B) Are compressible
500
A roller coaster at an amusement park goes from the top of a tall hill to the bottom. During this time, the roller coaster
A) gains both potential and kinetic energy
B) loses both potential and kinetic energy
C) loses kinetic energy and gains potential energy
D) loses potential energy and gains kinetic energy
D) loses potential energy and gains kinetic energy
500
Based on the graph, how would you BEST describe the speed of the racehorse?
A) constantly decreasing speed
B) both increasing and decreasing speed
C) stopped, starting, and then stopped again
D) starting to move and then increasing speed
D) starting to move and then increasing speed
500
An electromagnet is a temporary magnet made by coiling wire around an iron core which becomes a magnet when an electric current flows through the wire.
How could the strength of an electromagnet be increased?
A) use fewer coils of wire around the nail
B) use more coils of wire around the nail
C) use a battery with less voltage
D) use a smaller nail
B) use more coils of wire around the nail
500
A. atom
B. element
C. ion
D. matter
E. molecule
Neon is an inert gas, found in the last column of the periodic table. This is a model depicting the smallest particle of neon. Review the prompt. What statements also describe this model?
A) a and b
B) a and d
C) a, b, and d
D) a, b, d, and e
C) a, b, and d