c165 SET2
1. Which of the following is an INCORRECT interpretation of the law of con- servation of energy?(1 Point)
Energy can be converted from one form to another. Energy cannot be created.
Energy cannot be destroyed.
The total energy involved in any process does not remain constant.: The total energy involved in any process does no
remain constant.
2. When the brakes of a car lock its wheels, causing the car to slide, the frictional force between the wheels and
ground cause the energy of motion of the car to become energy: Thermal
3. In which of the following situations would thermal energy be transferred from the given object to the
surroundings? Ignore the effects of friction.(1 Point)
a roller-coaster car rolling down the track
a hot hard-boiled egg placed in a bowl of cold water a stereo speaker causing
the floor to vibrate
a waterfall causing a mill wheel to turn: a hot hard-boiled egg placed in a bowl of cold water
4. Plants convert sunlight into useful energy that is stored in the form of carbohydrates (a process called
photosynthesis). Which energy conversion best describes this process?(1 Point)
electromagnetic energy to chemical potential energy electromagnetic energy to kinetic
energy
chemical potential energy to electromagnetic energy
gravitational potential energy to chemical potential energy: electromagnetic energy to chemical potential energy
5. The law of conservation of energy states that: the total energy of the universe remains constant
6. Which of the following characteristics distinguishes a longitudinal wave from a transverse wave? (1 Point)
the speed at which the wave travels the amplitude of the
wave's vibration the frequency of the wave's vibration
the direction of the wave's vibration: the direction of the wave's vibration
7. How does a sound wave carry energy from a loudspeaker to the ear of the listener?: The pattern of
compressions travels; the air itself remains in about the same place.
8. A difference in which of the following characteristics distinguishes radio waves from X-rays?: wavelength
1/
5
, c165 SET2
9. If you are told the wavelength of the light emitted by a laser, what could you infer about that light? (1 Point)
its amplitude its
intensity its color
its speed in a vacuum: Color
10.What is the significance of valence electrons?: Valence electrons are in- volved in forming chemical bonds.
11.Which of the following statements regarding the formation of compounds from elements is true?: When
elements combine to form compounds, chemical bonds form between the atoms of the compound.
12.Which of the following are considered pure substances?(1 Point) mixture
compound
element
elements and compounds
compounds and mixtures: elements and compounds
13.Which of the following statements about elements is true?(1 Point) Some elements exist as
molecules.
Some elements contain different types of atoms. All elements exist as
molecules.
An element never exists as a molecule.: Some elements exist as molecules.
14.Which of the following is the correct scientific definition for a pure sub- stance?(1 Point)
A pure substance contains only one element or compound. A pure substance contains
only one type of atom.
A pure substance has all impurities removed.
A pure substance is always a compound.: A pure substance contains only one element or compound.
15.The Orion molecular cloud complex is the most active region of star formation nearest to Earth's own sun. A
new star would be MOST likely to form in the cloud complex where the amount of hydrogen, helium and lithium
is the because of the gravitational attraction between the dust particles: Most dense
16.Stars are grouped together in because of the attraction for each other due to
gravity.: galaxies
17.Gravity is the unifying force of attraction in the universe. Gravity explains why the moon orbits Earth,
Jupiter orbits the sun and the sun orbits
in the Milky Way Galaxy: Black hole
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5
1. Which of the following is an INCORRECT interpretation of the law of con- servation of energy?(1 Point)
Energy can be converted from one form to another. Energy cannot be created.
Energy cannot be destroyed.
The total energy involved in any process does not remain constant.: The total energy involved in any process does no
remain constant.
2. When the brakes of a car lock its wheels, causing the car to slide, the frictional force between the wheels and
ground cause the energy of motion of the car to become energy: Thermal
3. In which of the following situations would thermal energy be transferred from the given object to the
surroundings? Ignore the effects of friction.(1 Point)
a roller-coaster car rolling down the track
a hot hard-boiled egg placed in a bowl of cold water a stereo speaker causing
the floor to vibrate
a waterfall causing a mill wheel to turn: a hot hard-boiled egg placed in a bowl of cold water
4. Plants convert sunlight into useful energy that is stored in the form of carbohydrates (a process called
photosynthesis). Which energy conversion best describes this process?(1 Point)
electromagnetic energy to chemical potential energy electromagnetic energy to kinetic
energy
chemical potential energy to electromagnetic energy
gravitational potential energy to chemical potential energy: electromagnetic energy to chemical potential energy
5. The law of conservation of energy states that: the total energy of the universe remains constant
6. Which of the following characteristics distinguishes a longitudinal wave from a transverse wave? (1 Point)
the speed at which the wave travels the amplitude of the
wave's vibration the frequency of the wave's vibration
the direction of the wave's vibration: the direction of the wave's vibration
7. How does a sound wave carry energy from a loudspeaker to the ear of the listener?: The pattern of
compressions travels; the air itself remains in about the same place.
8. A difference in which of the following characteristics distinguishes radio waves from X-rays?: wavelength
1/
5
, c165 SET2
9. If you are told the wavelength of the light emitted by a laser, what could you infer about that light? (1 Point)
its amplitude its
intensity its color
its speed in a vacuum: Color
10.What is the significance of valence electrons?: Valence electrons are in- volved in forming chemical bonds.
11.Which of the following statements regarding the formation of compounds from elements is true?: When
elements combine to form compounds, chemical bonds form between the atoms of the compound.
12.Which of the following are considered pure substances?(1 Point) mixture
compound
element
elements and compounds
compounds and mixtures: elements and compounds
13.Which of the following statements about elements is true?(1 Point) Some elements exist as
molecules.
Some elements contain different types of atoms. All elements exist as
molecules.
An element never exists as a molecule.: Some elements exist as molecules.
14.Which of the following is the correct scientific definition for a pure sub- stance?(1 Point)
A pure substance contains only one element or compound. A pure substance contains
only one type of atom.
A pure substance has all impurities removed.
A pure substance is always a compound.: A pure substance contains only one element or compound.
15.The Orion molecular cloud complex is the most active region of star formation nearest to Earth's own sun. A
new star would be MOST likely to form in the cloud complex where the amount of hydrogen, helium and lithium
is the because of the gravitational attraction between the dust particles: Most dense
16.Stars are grouped together in because of the attraction for each other due to
gravity.: galaxies
17.Gravity is the unifying force of attraction in the universe. Gravity explains why the moon orbits Earth,
Jupiter orbits the sun and the sun orbits
in the Milky Way Galaxy: Black hole
2/
5
