770576
Pregunta 1
Pregunta
W reacts with X in the equation below. \[W+X → Y+Z\]According to the law of conservation of mass, how many grams of W must react completely with 225 grams of X to result in 375 grams as the product?
Respuesta
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150 g
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225 g
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375 g
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600 g
Pregunta 2
Pregunta
Which statement accurately describes the interaction between the foot and sidewalk as a person moves forward along the sidewalk in the direction of the arrow (forward)?
Image:
Capture.PNG (image/PNG)
Respuesta
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The foot pushes forward on the sidewalk; the sidewalk does not push forward on the foot.
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The foot pushes forward on the sidewalk; the sidewalk pushes forward on the foot.
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The foot pushes backward on the sidewalk; the sidewalk pushes forward on the foot.
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The foot pushes backward on the sidewalk; the sidewalk pushes backward on the foot.
Pregunta 3
Pregunta
In the diagram, the top wave is wave X and the bottom wave is wave Y. These waves are similar types of waves with the same amplitude travel in the same medium. Compared to wave X, which statement is correct?
Image:
Capture1.PNG (image/PNG)
Respuesta
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Wave Y has less speed.
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Wave Y has less less energy.
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Wave Y has lower frequency.
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Wave Y has a shorter wavelength.
Pregunta 4
Pregunta
A student is testing the conductivity of two solid substances. Substance A has a high conductivity and Substance B has a low conductivity. Based on this information, what must be true regarding these two substances?
Respuesta
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Electrons in Substance A are able to move more easily than electrons in Substance B.
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There is more energy stored in chemical bonds in Substance A than there is in Substance B.
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The atomic nuclei in Substance A have more mass than the atomic nuclei in Substance B.
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Substance A contains a higher percentage of radioactive atoms than Substance B.
Pregunta 5
Pregunta
Based on the following information, which of these is the correct element represented? (Yellow = Electron, Blue = Neutron, and Red = Proton.)
Image:
Capture.PNG (image/PNG)
Respuesta
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Image:carbon.PNG (image/PNG)
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Image:lithium.PNG (image/PNG)
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Image:uranium.PNG (image/PNG)
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Image:sodium.PNG (image/PNG)
Pregunta 6
Pregunta
What is the mathematical relationship between protons and electrons in a negatively charged atom?
Respuesta
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Protons equal the electrons.
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There are more electrons than protons.
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There are more protons than electrons.
Pregunta 7
Pregunta
Refer to the diagram to the left. Which statement is a correct comparison of the red color to the violet color in the visible light portion of the electromagnetic spectrum?
Image:
spectrum (image/jpg)
Respuesta
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Violet has a higher frequency and longer wavelength than red.
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Violet has a higher frequency and a shorter wavelength than red.
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Violet has a lower frequency and longer wavelength than red.
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Violet has a lower frequency and a shorter wavelength than red
Pregunta 8
Pregunta
In an isotope, what changes?
Respuesta
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the number of neutrons
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the number of protons
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the number of electrons
Pregunta 9
Pregunta
In a ski lift, someone is taken up a ski hill on a chair attached to a wire, than skis down the hill. Which statement best describes the energy change taking place?
Respuesta
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The skier loses kinetic energy as they are lifted up the slope aand lose potential energy as they ski down the slope.
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The skier gains potantial energy as they are lifted up the slope and maintains the same potential energy as they ski down the slope.
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The skier gains potantial energy as they are lifted up the slope and loses potential energy as they ski down the slope.
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The skier gains potantial energy as they are lifted up the slope and gain both potential and kinetic energy as they ski down the slope.
Pregunta 10
Pregunta
Two graduated cylinders are filled with the same amount of water; then a metal rod is dropped in one and a ring in the other. Using the picture, what conclusion can you make about this experiment?
Image:
man (image/jpg)
Respuesta
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The volume can't be determined.
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The mass can't be determined.
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The volume of the metal is less than the volume of the ring.
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The volume of the ring is less than the volume of the metal.
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The mass of the metal is less than the mass of the ring.
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The mass of the ring is less than the mass of the metal.
Pregunta 11
Pregunta
What causes a comet to glow?
Respuesta
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sunlight being refected
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friction
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gravity
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bending of light as it passes the atmosphere
Pregunta 12
Pregunta
What causes a meteor to glow?
Respuesta
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sunlight being reflected
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friction
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gravity
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bending of light as it passes the atmosphere
Pregunta 13
Pregunta
Looking at the picture, which of the following choices shows the correct states of matter for each letter?
Image:
xyz.PNG (image/PNG)
Respuesta
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X = solid, Y = liquid, Z = gas
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X = solid, Y = gas, Z = liquid
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X = liquid, Z = gas, Y = solid
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X = liquid, Z = solid, Y = gas
Pregunta 14
Respuesta
- True
- False
Pregunta 15
Respuesta
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Leg A
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Leg B
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Leg C
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Leg D
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Leg E
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