Early Astronomy

Aristotle concluded that the Earth is shaped like a _____________.

• ellipse

• sphere

• telescope

• heliocentric

The _____________ model suggests that the sun is at the center of the solar system.

• geocentric

• heliocentric

• elliptical

• spherical

______________ was the first person to propose that the Earth orbits the sun annually.

• Galileo

• Copernicus

• Aristotle

• Newton

Kepler's 1st Law states that the path of each planet around the sun is an _____________.

• circle

• ellipse

• sphere

• line

Legend says that Galileo invented a _____________ that helped him make astronomical discoveries.

• heliocentric model

• telescope

• compass

• globe

The geocentric model is a model where _____________ is at the center of the solar system.

• sun

• moon

• Earth

• Mars

Kepler’s 2nd Law of Planetary Motion states that planets sweep out _____________ areas in equal time intervals.

• unequal

• equal

• circular

• elliptical

Tycho Brahe built instruments to measure the _____________ positions.

• planetary

• solar

• lunar

• stellar

The distances in the solar system are measured in _____________ units (AU).

• metric

• astronomical

• imperial

• cosmic

The distance between _____________ and _____________ is equal to 1 AU.

• Earth, Mars

• Earth, Sun

• Sun, Moon

• Earth, Moon