Earth in Space & Time

Earth’s period of a 24 hour day is based on .

(a)  

• the time it takes for the Sun to appear in the same position
• The zodiac
• The little dipper
• Polaris
• The time it takes the Earth to rotate once

Our calendars are roughly 30 days. What is this based on?

• Moon phases

• The Moon's revolution around the Earth

• The Moon's revolution around the Sun

• Solar eclipses, even if they're partial

Tags

NGSS.MS-ESS1-1

The wobbling of Earth’s axis is called ____

• recession

• obsession

• precession

• retrograde motion

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NGSS.MS-ESS1-1

What is retrograde motion?

• It's an astrological way to mark a period of bad luck

• It's a motion caused by the constellations

• It's when the Moon reverses it's orbit

• It's when a planet appears to go in reverse when seen from Earthretrograderetrograde

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NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

When the Moon is changing from new to full it's said to be​ (a)   and when it's changing from full to new it's said to be ​ (b)   .

• waxing
• waning
• quarter
• full
• retrograde
• perturbated
• approaching
• receding

Tags

NGSS.MS-ESS1-1

What is the name for the APPARENT path of the Sun as seen from Earth?

• declination

• right ascension

• the ecliptic

• perturbation

The Earth is said to be at ​ (a)   when it's closest to the Sun and at ​ (b)   when it's farthest away.

• perihelion
• Aphelion
• Apogee
• Perigee
• Declination
• Right Ascension
• Celestial sphere
• Ecliptic
• Revolution

How many "heavenly bodies" wandered the stars according to Ptolemy?

• One

• Four

• Five

• Seven

• Nine

Answer explanation

During Ptolemy's time, there were no telescopes, so he could only see what was visible with his naked eye. The "heavenly bodies" were the Moon, the Sun, Mercury, Venus, Mars, Jupiter & Saturn.

Match the following

• Invented the telescope

• Tycho Brahe

• The first "modern" astronomer to re-introduce the idea of a sun-centered universe

• Sir Isaac Newton

• Explained planetary motion

• Nicolas Copernicus

• The first astronomer on record to ever propose a sun-centered universe

• Aristarchus

• The last/greatest naked eye astronomer. Charted planets and stars for 20 years without a telescope

• Galileo

Tags

NGSS.MS-PS2-4

Match the following

• Compiled all major greek texts into one book called the Almagest

• Johannes Kepler

• Calculated Earth's radius with simple math, a stick and it's shadow

• Hipparchus

• Believed in Geocentricity (Earth-centered universe) and everyone accepted his ideas for 2,000 years!

• Eratosthenes

• Believed in heliocentricity (Sun-centered universe) Developed 3 laws of planetary motion

• Aristotle

• Introduced celestial coordinates, predicted solar eclipses and discovered precession

• Ptolemy