_______________ is an instrument used to measure atmospheric pressure
Fill in the blank(s) with correct word
barometer
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The ________ is the layer of the atmosphere where electrified atoms are plentiful
A) thermosphere B) ionosphere C) troposphere D) exosphere E) stratosphere
The annual range of temperature may be described as the difference between ________
maximum and minimum temperatures over a period of one year maximum and minimum temperatures during the period of one month the average temperatures of the warmest and coldest months both a and c
Small earthquakes following the main surface wave arrival are called foreshocks.
Answer the following statement true (T) or false (F)
What are the relative compositions of the materials from which stars form?
A) about 74% hydrogen, about 24% helium, no more than 2% other materials B) about 24% hydrogen, about 74% helium, no more than 2% other materials C) about 2% hydrogen, about 74% helium, no more than 24% other materials D) Stars have vastly differing combinations of materials.