Chemistry Questions
Explore questions in the Chemistry category that you can ask Spark.E!
In the body action potentials are initiated at one end of the axon and contacted towards ____?
Water molecules come closer together with a(n) _________ in temperature, and density increases.
_________ s a liquid's resistance to flow.
Where is the neurotransmitter receptor region on postsynaptic neuron usually located?
The viscosity of water ______ when heated.
Salt water is _________ than fresh water, causing fresh water to float on top of seawater.
Large numbers of small organisms move collectively to the ocean's surface during the night and sink during the day. Their movements can be detected by depth recorders, and this layer of organisms is known as the ______ layer.
What is the name of the law we use to calculate the intensity of light at any depth?
Light ______ in water can be measured by simple means, such as with a Secchi disk, or with more modern techniques that employ a beam of light projected to a submerged photoreceptor.
Sound travels _________ (and farther) in water than it does in air.
What way of energy transmission is when heated fluid moves and carries heat to a new location.
Modern ocean-going vessels use ______ to measure the depth of water beneath the ship.
Different types of sound are used to study the sea floor: __________ frequency for studying water depth and __________ frequency for studying sediment layers.
The speed of sound in seawater increases with increasing ______. (Choose all that apply.)
Sonar is a technology that uses ______ to measure distance and direction of a target underwater.
Rank the visible light according to attenuation in water. Put the color of light that is most attenuated at the top of the list.
The ______ is a zone of minimum sound velocity in which the sound energy is refracted back and forth along the channel for great distances.
The average velocity of sound in seawater is ______ m/s as opposed to 334 m/s in dry air at 20°C.
The speed of sound in seawater ______ with increasing temperature, salinity, and depth.
A ______ is a simple way of measuring light attenuation by lowering it into water until it just disappears from sight.