Moon Phases
Luna orbits around this planet
Earth
Name one type of eclipse
Lunar or Solar
What is the primary cause of Earth's seasons?
The Earth's tilt on its axis as it revolves around the Sun
What causes day and night on Earth?
rotation of the Earth on its axis
The speed that will allow an object to take off from a surface without falling back down
escape velocity
Which phase occurs when we cannot see any of the moon from Earth?
New moon
This is the darkest part of the Earth's shadow during a lunar eclipse
Umbra
Why is it colder in the winter?
There is indirect sunlight
How long does it take Earth to complete one full rotation on its axis?
24 hours
Why does the Sun have the most gravity?
Because it has the most mass (it is the biggest)
This phase occurs when the Earth is between the Sun and the moon
Full moon
This type of eclipse results when the Sun is blocked by the moon
solar eclipse
What season is it in the southern hemisphere when it is spring in the northern hemisphere?
fall/autumn
The apparent motion of the stars around Polaris during the night is caused by:
rotation of the Earth on its axis
Which planet has the most gravity?
Jupiter
During which moon phase is the Moon completely illuminated as viewed from Earth?
full moon
This type of eclipse can only occur during a full moon
lunar eclipse
What season is it when the Northern hemisphere is tilted towards the Sun?
Summer
Why do we always see the same side of the Moon from Earth?
The Moon's rotation period equals its orbital period
Orbits are a balance between gravity and ______ (Newton's 1st law).
inertia
About how long does it take for the moon to orbit the Earth?
about a month / 28 days
Why don't we have eclipses every month?
Because the moon's orbit is tilted and not a perfect circle, so it only aligns perfectly at certain times
Why does Australia experience winter while in the United States is experiencing summer?
They are in different hemispheres.
What causes the apparent change in position of constellations throughout the year?
Earth's revolution around the Sun
Isaac Newton realized that when the Moon is in orbit it is actually ____.
falling and never hitting the ground.