Which one of the following factors is the main source of the earth's heat?

a. sun

b. pressure

c. season

d. altitude

On the first day of fall, a. the Sun does not set along the Arctic or Antarctic Circles b. the Sun does not rise along the Arctic or Antarctic Circles c. all places on Earth have relatively the same amount of day and night d.

Which statement about the years between the end of World War II and the beginning of the Korean War is not true?

Continental drift and plate tectonics are both theories but only plate tectonics is accepted as fact by the scientific community. Explain why plate tectonics is considered a scientific fact and why continental drift is not.

What is the primary mission of the twin rovers and the Mars Science Laboratory (MSL) ?

Which of the following is NOT a type of rock? a. igneous c. sedimentary b. endomorphic d. metamorphic

Why does the government place excise taxes on goods such as cigarettes and alcohol?

Where did the Austronesian languages originate? A. near present-day Indonesia B. near present-day New Zealand C. near present-day Easter Island D. near present-day Hawaii

A travel-time graphcan be used to find the

Why would contries have a low percentage of children

3. Copper ore deposits in Arizona and New Mexico are associated with dioritic plutons formed along an ancient? a. groundwater table b. subduction zone c. earthquake d. strike slip margin