Ride the WAVE
The number of waves produced over a given period of time.
frequency
Why does an iceberg float in the ocean?
Ice is less dense than water.
What could happen if Earth did not have an atmosphere?
meteors would strike Earth more frequently, the temperature on Earth would be more extreme
An ecosystem at Virginia Beach will likely experience the highest amount of disturbance from ---
A. increased non-motorized boat traffic
B. the construction of a new pier
C. recreational fishing off the end of a pier
D. humans swimming around a pier
B. the construction of a new pier
What element has an atomic number of 47?
Silver
The distance a point on a wave travels over time. Usually expressed in meters/second.
speed
What molecules are polar molecules. What does that mean?
The hydrogen molecules are positive while the oxygen molecule has a negative charge.
The humidity outside is 65%. What tool is used to measure humidity?
hygrometer
How could urban growth affect ecosystems?
A. Cause populations in an ecosystem to remain stable.
B. Cause populations in an ecosystem to increase.
C. Cause populations in an ecosystem to decrease.
D. Cause ecosystems to become similar with populations.
C. Cause populations in an ecosystem to decrease.
Which of the following elements are a nonmetal?
A. Chromium
B. Calcium
C. Lithium
D. Bromine
D. Bromine
When a wave passes through different materials resulting in a change in the speed of the wave.
A. Reflection
B. Refraction
C. Wavelength
D. Diffraction
B. Refraction
Which property of water allows it to form droplets on a leaf's surface?
A. cohesion
B. adhesion
C. high heat of vaporization
D. universal solvent
A. cohesion
Low air pressure is associated with what type of weather?
Fertilizer being used by farmers, sewage in the water, industry wastes
What is the chemical symbol for lead?
Pb
The bending of longitudinal waves around small obstacles or spreading out of the waves beyond openings.
A. Reflection
B. Refraction
C. Wavelength
D. Diffraction
D. Diffraction
Why is water considered the "universal solvent"?
It is able to dissolve many substances due to the polarity of the water molecules.
What does an anemometer measure?
wind speed
A company wants to dam the James River in Richmond. What effect would that have on the river?
A. The river ecosystem above and below the dam would change.
B. The river ecosystem would not change.
C. The river ecosystem above the dam would be changed.
D. The river ecosystem below the dam would be changed.
A. The river ecosystem above and below the dam would change.
Which element below is a metalloid?
A. S
B. As
C. Ni
D. Na
B. As
Which medium does a longitudinal wave travel slowest?
A. solid
B. liquid
C. gas
D. vacuum
C. gas
During winter water freezes in the cracks of the sidewalk. The sidewalk begins to break apart. What type of weathering is this?
Physical weathering
As altitude increases in the troposphere, what happens to the air temperature?
It decreases.
What will most likely decrease the size of a habitat?
A. deforestation
B. increase in population of prey
C. decrease of predators
D. increase of biotic factors
A. deforestation
Why do elements of the same group have similar chemical behaviors?
They have the same number of valence electrons.