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Which list correctly names the three types of galaxies?
binary, open, globular
elliptical, open, binary
irregular, spiral, elliptical
open, irregular, spiral
The correct answer is: irregular, spiral, elliptical
Who rediscovered Aristarchus’s model of a heliocentric solar system?
Copernicus
Galileo
Kepler
Ptolemy
It was Nicolaus Copernicus who rediscovered and developed Aristarchus's model of a heliocentric solar system.
Which statement provides the complete explanation of how renewable and nonrenewable resources differ?
They differ in the amount they are found in nature.
They differ in the rate they are replaced.
They differ in the available amount and rate they are used and replaced.
They differ in the rate they are used.
The correct statement that provides a complete explanation of how renewable and nonrenewable resources differ is: "They differ in the available amount and rate they are used and replaced."
Scientists have detected an asteroid that is 700,000,000 km from Earth. About how many astronomical units is that?
0.5 AU
1 AU
3.5 AU
4.5 AU
To determine the approximate number of astronomical units (AU) for a distance in kilometers, you can divide the distance by the average distance between the Earth and the Sun, which is approximately 150 million kilometers.
In this case, dividing 700,000,000 km by 150,000,000 km/AU, we get approximately 4.67 AU.
Rounding this value, the correct answer is approximately 4.5 AU.
Which two scientists’ theories supported the general consensus of the people and religious teachings of the time?
Aristarchus and Aristotle
Aristotle and Ptolemy
Ptolemy and Copernicus
Galileo and Aristarchus