Matter
Energy
Forces
Waves
Motion
100
As you move from ice to water to steam, which statement is true?
Responses
1. Temperature, density, and compressibility all increase.
2. Temperature, kinetic energy, and compressibility all increase.
3. Temperature and compressibility increase as molecular motion decreases.
4. Temperature and kinetic energy increases while compressibility decreases.
2. Temperature, kinetic energy, and compressibility all increase.
100
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?
electrical energy
100
How do electrically charged objects affect neutral objects when they come in contact?
A) Electrons move from neutral objects to negatively charged objects through induction.
B) Protons move from positively charged objects to neutral objects through friction.
C) Protons move from neutral objects to positively charged objects through conduction.
D) Electrons move from negatively charged objects to neutral objects through conduction.
D) Electrons move from negatively charged objects to neutral objects through conduction.
100
By 1949 Americans who lived within the range of a television stations in the country could watch TV, vastly changing the way that humans communicated with each other. What type of electromagnetic wave made TV technology possible?
A) microwaves
B) radio waves
C) seismic waves
D) infrared waves
B) radio waves
100
Two forces are acting on a wheelbarrow. One force is pushing to the right and an equal force is pushing to the left. What can you say about the wheelbarrow's movement?
it is not moving due to balanced forces
200
Consider the circled elements in the periodic table. Based on their location, we could infer that they are:
A) very reactive gases.very reactive gases.
B) gases at room temperature.gases at room temperature.
C) do not react readily with metals.do not react readily with metals.
D) nonreactive solids at room temperature.
B) gases at room temperature
200
The sun heats Earth mainly through
radiation
200
Conductor: metal paper clip, soda can
Insulator: plastic cup, wood swing, notebook paper, glass
200
You see lightning before you hear thunder because
A) light waves can travel through a vacuum
B) sound Waves cannot travel through air
C) light waves travel faster than sound waves
D) sound waves travel faster than light waves
C) light waves travel faster than sound waves
200
Veronica and her little sister, Monique, are playing on a seesaw. If Veronica weighs 75 pounds, and Monique weighs 60 pounds, which statement is true?
A) If they push back and forth for a long time, the seesaw will begin to move on its own through gravity.
B) If they both push off the ground with equal force, the seesaw will balance and their heights would be level.
C) To lift herself from the ground, Monique will need to push much harder than Veronica because she is lighter.
D) If they stop adding force to make the seesaw move, Monique will be in the air and Veronica will be touching the ground.
D) If they stop adding force to make the seesaw move, Monique will be in the air and Veronica will be touching the ground.
300
Use the formula for density, d = M/V, where d is density, M is mass, and V is volume, to solve the problem below.
During Mr. Nye's science class, students were expected to identify various substances using physical properties they could easily measure. Mr. Nye gave each of the five groups a green, metal cube and asked them to identify what the cube was made of.
Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . His group's cube was made of:
A) aluminum
B) gold
C) nickel
D) zinc
D) zinc
300
As temperature of this substance rises from 20°C to 50°C, the substance _______ heat and its kinetic energy _________ .
A) absorbs; increases
B) releases; increases
C) absorbs; remains constant
D) remains constant; increases
A) absorbs; increases
300
How is an electromagnet different from a bar magnet?
A) Bar magnets have a north and south pole, but electromagnets do not.
B) Electromagnets are strong, permanent magnets, but bar magnets are always weaker.
C) Electromagnets are only magnetized when a current flows through a wire wrapped around the core.
D) Bar magnets are attracted to ferromagnetic substances such as iron. Electromagnets are attracted to all metals.
C) Electromagnets are only magnetized when a current flows through a wire wrapped around the core.
300
In order for you to see an object, which of these must happen?
A)light reflected from the object's surface must enter your eyes
B) the object must have a shadow, for your brain to interpret what it is
C) light must be absorbed by the object and then refracted back to your eyes
D) light travels from the object, back to the light source, and then to your eyes
A)light reflected from the object's surface must enter your eyes
300
Which point(s) on the graph indicate a change in acceleration?
A) B only
B) B and D
C) A,C, and E
D) A and E
B and D
400
Sherry combined water, lemon juice, and sugar in a pitcher. Sherry has made a
A) new compound
B) pure substance
C) homogeneous mixture
D) heterogeneous mixture
homogeneous mixture
400
Consider the diagram of a pendulum's motion shown above. A pendulum can be used to model the change from potential energy to kinetic energy and back to potential energy. According to the diagram, where are energy conversions taking place?
A) point A
B) point B
C) point C
D) both A and C
D) both A and C
400
The diagram below shows two celestial bodies with the same mass, M, placed a distance, D, apart.
What would increase the gravitational force between the two bodies?
A) Maintaining M and increasing D
B) Decreasing M and maintaining D
C) Decreasing M and increasing D
D) Increasing M and decreasing D
D) Increasing M and decreasing D
400
Which electromagnetic radiation on the electromagnetic spectrum can be detected by the human eye?
visible light
400
The basic concept of how a simple motor works is explained by which statement?
A) When a fan blows on a wire, it causes it to spin, creating a force.
B) When a fan blows on a wire, it causes it to spin, creating an electrical current.
C) When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.
D) When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.
D) When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.
500
Which chemical equation shows that the total mass during a chemical reaction stays the same?
A) Mg+Cl2 -> MgCl2
B) NaOH+MgCl2 -> NaCl+MgOH
C) 2Na+2H2O -> NaOH+H2
D) H2O+O2 -> H2O
A) Mg+Cl2 -> MgCl2
500
In this scenario a battery is used to supply chemical potential energy. The potential energy is transformed and produces kinetic energy. The battery causes a fan to spin and that kinetic energy can also be described as mechanical energy. Check out the values for each: 100 J potential energy results in 75 J of kinetic energy. What conclusion can be drawn from the energy transformation diagram?
A) The energy transformation results in 25J of energy being lost.
B) Not all of the chemical potential energy is converted; 25J remains as potential energy.
C) The 100J of chemical potential energy releases 25J as friction and 75J of mechanical energy.
D) The chemical potential energy is transformed into 75J of kinetic energy and 25J of heat energy.
D) The chemical potential energy is transformed into 75J of kinetic energy and 25J of heat energy.
500
In Physics lab, Ellen has been given the task of constructing a simple motor. She must find common household items at home and bring them to class the following day. Her list of items include:
9 volt battery and leads, copper wire rotor, platform to hold the rotor, a magnet, and a wood base
She sets up her motor in physics lab the next day and finds that it works well. Which statement below explains the flow of energy through Ellen's motor?
A) battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy
B) battery--> magnet--> electrical current--> copper wire rotor--> mechanical energy
C) magnet--> mechanical energy--> copper wire rotor--> battery--> electrical current
D) magnet--> copper wire rotor--> mechanical energy--> battery--> electrical current
A) battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy
500
In a stadium, fans stand up and sit down to produce a wave across the stadium. This type of wave where the material travels perpendicular to the direction of travel of the the wave. Which type of wave does this describe?
transverse wave
500
A train engineer started the train from a standstill and sped up to 5 m/s, she then rounded a corner at a constant speed. She then sped the train up to 10 m/s on the next straightaway. Next, the train chugged around another bend at 10 m/s, and then its speed slowed to 5 m/s after coming out of the bend. Finally, the train reached the station, and the engineer applied the brakes and brought the engine to a stop. How many times did the train accelerate?
6