Nature of Science
EM Spectrum (7.P.10.1)
Reflection, Refraction, and Absorption (7.P.10.1)
Energy Waves (7.P.10.1/3)
Energy Transformation (7.P.11.2)
Heat Transfer (7.P.11.4)
100
A scientist has a hypothesis involving the genes of two spotted lizard breeds. He designed an experiment to test his hypothesis. After he completes the experiment, which additional steps would have the greatest impact on strengthening his ideas? (7.N.1.2)
He should repeat his experiment then have someone else replicate his experiment.
100
How is ultraviolet light different from the light emitted by a flashlight? (7.P.10.1)
Ultraviolet light is invisible to the human eye.
100
Light waves that bounce directly from the surface of an object or material are being ____________.
Reflected
100
Which state of matter would sound travel fastest through? (7.P.10.3)
Solids
100
Kyle is riding his bicycle. He works very hard to reach the top of a hill and then coasts down the other side. Why does Kyle not need to work as hard as he travels downhill?
Potential energy is converted to kinetic energy as he moves downhill.
100
In which way is heat transferred? (7.P.11.4)
It is transferred from warmer to cooler objects.
200
Steph Curry practices his 3-pointers for two hours every day for five weeks with basketball A. He documents how many times he makes a basket and how many times he misses. He does the same process with basketball B and C. Steph compares the percentage of baskets and misses in a chart and concludes that basketball A is the best one for him to use for the game. After the game, he tested basketballs A, B and C again, and determined that basketball A was still the best one. Which concept of Nature of Science did Curry exemplify? (7.N.1.2)
He used repetition because he retested the basketballs.
200
White light is made up of a spectrum of many different colors. What property is used to divide the various colors in the spectrum? (7.P.10.1)
Wavelength/frequency
200
Waves that change direction of travel through a changed medium, "bending" their paths, are being _________________.
Refracted
200
Which materials would light travel fastest through? (7.P.10.3)
Gas (or empty space).
200
Alexander hooks a rubber band around his thumb and forefinger. He moves his fingers apart, stretching the rubber band. With a quick, sudden motion, he bends his thumb forward so that the rubber band slips off. What happens next? (7.P.11.2)
Potential energy (stretched rubber band) becomes kinetic energy (moving rubber band).
200
What could result from heat being transferred to a substance? (7.P.11.1)
Changes to the state of matter (solid to liquid to gas)
300
Explain the purpose of an experimental control.
To establish a baseline of data to compare IV data.
300
What is the primary difference between the colors of visible light? (7.P.10.1)
Wavelength/frequency
300
Waves that travel into an object/medium and do not continue moving, instead stopping altogether, are being ________________.
Absorbed
300
How does the speed of light in water compare to its speed in air? (7.P.10.3)
The speed is slower in water than in air because the molecules are closer together.
300
The transfer of energy that takes place between gravitational potential energy and kinetic energy on a roller coaster demonstrates which law? (7.P.11.2)
The Law of Conservation of Energy
300
The more heat the particles contain, the faster they move about. In which state of matter do the particles have the most heat? (7.P.11.1)
Gas
400
Compare and contrast the two main types of experimental variables.
IV v. DV.
400
Describe the amount of energy carried by different parts of the EM Spectrum.
Increasing from Radio to Gamma.
400
A rainbow is a result of this phenomenon.
Refraction
400
The frequency of a wave is ____________ proportional to its wavelength.
inversely
400
Why won't a bouncing ball remain in motion forever?
The motion (kinetic energy) is transferred to heat (friction) and sound, decreasing the mechanical energy of the ball.
400
Kendra performed an experiment to demonstrate friction by rubbing her hands together for 50 seconds. She noticed her hands became warm. What law is being demonstrated here?
Law of Conservation of Energy
500
Sandy is conducting an experiment to see if the grades of dancers are better than the grades of baseball players. She organizes the dancers into group A and the baseball players into group B. She records the grades and makes the conclusion that the dancers have overall better grades. Is Sandy correct in her statement that this is an experiment? (7.N.1.3)
Nothing was controlled and/or tested. This was a detailed set of observations, or an investigation.
500
Mars is, on average, 12.5 light minutes away from Earth. How much time, on average, would it take to send a radio message from Mars to Earth?
12.5 minutes
500
The color __________ is the absorption of all other colors. The color _________ is the blending or reflection of all other colors.
What is black and white?
500
What form of energy does your phone most directly use to communicate with others?
Light/EM Radiation.
500
The motions of a toy drone are driven by an electric motor. The power source for the toy's motor is a pair of batteries. Summarize the energy transformations taking place in the toy drone. (7.P.11.2)
Chemical energy is transformed into electrical energy, and the electrical energy is transformed into mechanical energy.
500
Examine the data table below. At 40 seconds, Ken combined Beaker A and Beaker B. Describe what happens next. (7.P.11.4)
The temperatures even out to 50 degrees C and gradually transition to room temperature.