layer composed of layers

absorbs most ultraviolet rays

starts seven miles above the earth

lowest layer of the atmosphere

important for its radiowave reflection

trapping of heat by earth's atmosphere

________anything and everything which you may want to investigate can be determined by the scientific method.

All _______________ are tentative and subject to change and improvement in principle.

The complexity of the human body suggests an __________________ to the honest observer.

The North Star is the last star in the constellation known as ___________________.

___________________ are produced by a combination of the moon and sun's gravity.

Maritime climates _____________ be expected in the middle of large continents.

________________________ form over the warm equatorial regions of the world.

In order to use the scientific method, the investigation must be: (Select all that apply.)

Three basic types of graphs are:

Isaac Newton discovered that planets remain in continuous orbits because of______________ pull and the high orbital_________ .

The two heavenly bodies which were predicted to exist before they were sighted are _____ and _____.

Evidence is always subject to each individual's_____________ of the data.

One of the first useful instruments used by astronomers to map the direction of the stars was the __________

The percent of water vapor saturation of the air is called _________

Cirrus clouds are located in the ___________

The fluid filled circular canals of the inner ear are used for ___________________

The liquid part of the blood is called __________.

Global belts of low and high air pressure are caused by _____.

The measurement of the quantity of matter in an object is called _____.

The existence of comets provides possible evidence for _____.

The layer which protects from ultraviolet radiation is _________.

The "master controller" gland is the _____.

Gastric juices are secreted by glands which are located in the _____.

Seventy-eight percent of the atmosphere is made up of _____.

The standard unit of volume is the _____.

The cerebellum controls _____.

The brightness of a star is determined by _____. (Select all that apply.)

Two gases which are pollutants in the atmosphere are _____ and _____.

Match all of the planets and the asteroid belt with their distance from the Sun.