Science Flashcards
What helps explains the fact that earths axis is tilted?
Variations of the seasons in temperature regions.
A rock picked up on hillside was found to contain tiny pieces of seashells what is the best explanarion of how this rock was formed.
It was formed when sediments on the bottom of an ancient sea floor were deeply buried and subjectex to great pressure for long periods of time.
Acid rain dissolving limestone and making rocks smaller is an example of what kind of weathering?
Chemical
What is the composition of the earths atmosphere?
Mostly nitrogen and oxygen
Where do most of the earths vocanoes and earthquakes happen?
At the boundaries of earths tectonic plates.
When water evaporates from the ocean surface that water moves into the
Atmosphere
When the moon looks like a half disk as from earth the phase is called
Quarter
Which color star has the highest surface temperature?
Blue
Temperature regulation of the human body by evaporation is primary function of what?
The skin
What types of organism probably were the first to appear on Earth?
Bacteria
Which hormone is produced by the pancreas and helps maintain blood glucose levels?
Insulin
Which is the organic compound that stores the genetic information in a cell?
DNA
What is included in the central nervous system?
Brain, neurons, spinal cord
What carries blood away from the human heart?
Artery
The roots of a plant grow in response to gravity. This behavior is an example of what?
Geotropism
Pavlovs dogs salivating at the sound of a bell is a classic example of?
Conditioning
What happens when acid and a base are mixed in water?
A neutralization reaction occurs
Change of water from liquid to a gas is called?
Evaporation
When an object falls from a table to the floor, the change in energy is called….
Potential to Kinectic
The image formed by a convex mirror is always
Smaller than the object
