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Grade 12 Respiration, Digestion, and Excretion
For a cell surface to be a respiratory cell surface, it must be
  1. thick, dry, and covered with hair.
  2. moist and glandular.
  3. expansive.
  4. thin and moist.
  5. internal.
Grade 10 Forces and Motion
Which of the following statements about pressure in NOT correct?
  1. It increases with an increase in surface.
  2. It decreases with an increase in surface area.
  3. It increases with a decrease in surface area.
  4. It increases with an increase in an applied force.
Grade 12 Physics
Gauss's law for electricity states that the total electric flux through a closed surface is proportional to which of the following?
  1. The electric field strength at the surface
  2. The area of the surface
  3. The total electric charge enclosed within the surface
  4. The permittivity of free space
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1, 7.NS.A.1c
A seabird dives 17.3 feet down below the surface of the water. If the seabird ascends 6.7 feet, and then ascends another 2.9 feet, at what height is it now?
  1. 6.7 feet in the air
  2. 7.7 feet below the surface
  3. 10.6 feet below the surface
  4. 2.9 feet below the surface
Grade 8 Waves and Sound
In a surface wave,                                                                                      .
  1. particles of the medium vibrate with an up-and-down motion
  2. particles of the medium vibrate in circular patterns
  3. particles of the medium move parallel to the direction of energy motion
  4. particles of the medium move perpendicular to the direction of the wave's propagation
Grade 4 STEM Words
Choose the correct spelling.
  1. surface
  2. surfice
  3. surfase
Grade 5 Oceanography and Hydrology
Grade 10 Properties of Matter
Surface tension is
  1. skin on the surface of the liquid.
  2. the tendency of the surface of the liquids to decrease the area.
  3. the spontaneous mixing of two substances.
  4. the same as vapor pressure.
Grade 12 Tectonics
Primary waves travel
  1. faster than surface waves.
  2. slower than secondary waves.
  3. at the same rate as surface waves.
  4. slower than surface waves.
Grade 5 The Moon
The Moon's surface is
  1. rough and has craters.
  2. smooth and without rocks.
Grade 5 The Moon
The Moon's surface
  1. has lakes and volcanoes.
  2. is dry and dusty.
Grade 10 Oceanography and Hydrology
The difference between a lake and a pond is                          .
  1. salinity and depth
  2. temperature and salinity
  3. altitude and surface area
  4. surface area and depth
Grade 5 Oceanography and Hydrology
Which best describes rivers, streams, and lakes?
  1. surface salt water
  2. salty groundwater
  3. fresh groundwater
  4. surface fresh water
Grade 8 Waves and Sound
A plane mirror has a(n)
  1. curved surface.
  2. focal point.
  3. index of refraction equal to 1.
  4. flat surface.
Grade 11 Fluid Mechanics
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