Vocabulary
A unit used to measure distances within the Solar System.
Astronomical Unit (AU)
This unit is used to describe distances beyond the Solar System, such as to nearby stars.
Light-year
He first suggested the Sun might be at the center of the Solar System.
Copernicus
We only see one side of the Moon because of this.
Synchronous Rotation
What is Earth's tilt in degrees?
23.5°
What is the term used to describe a proportional model that compares the real size or distance of objects.
Scale
This is used to indirectly measure sizes and distances in space by comparing angles.
Angular Diameter
He first observed craters on the moon using a telescope.
Galileo
Waning
What do we call the longest day of the year in the Northern Hemisphere?
Summer Solstice
This describes a celestial body spinning on its axis.
Rotation
What is indirect measurement?
This method determines size or distance by comparing an observed object to a known reference instead of physically measuring it.
He discovered the universe is expanding.
Edwin Hubble
What are three things the astronauts did when they landed on the moon in 1969?
Took pictures, grabs samples, set up experiments, put down the american flag.
Occurs around March 21st when day and night are equal
Equinox
The movement of one body going around/orbiting another.
Revolution
In the Solar System model using 1 AU = 6 cm, Earth would be this far from the Sun.
6 centimeters
He developed the geocentric model used for centuries.
Ptolemy
Why does the moon affect tides more than the Sun?
The moon is closer to Earth
When it is Summer in Wisconsin, what season is occurring in Melbourne.
Winter
This model, introduced by Copernicus and later supported by Galileo, places the Sun at the center.
Heliocentric Model
If a calculated diameter is 30.00 cm and the real diameter is 28.16 cm, what is your percent error?
6.5%
( (30 – 28.16) ÷ 28.16 × 100 )
This invention began the modern era of astronomy.
The telescope
What is the difference between a meteoroid, meteorite, and meteor?
meteoroid: rocky debris constantly moving in space
meteorite: a meteoroid that survives its passage and hits a planetary surface
meteor: the streak of light we see when a meteoroid is trying to make it through our atmosphere, and burns up!
Why do we experience temperature changes depending on the season?
The angle of the suns rays. If they are concentrated and hitting straight on its warmer, when they are angled the suns energy gets spread out and its colder.