Moon phases
What is the phase where the moon is lit fully, from the sun being reflected on the half of the moon facing Earth?
Full Moon
What is on June 21st?
The Summer Solstice
Why is the force of the Earths gravity stronger than the Moons?
The Earth is larger, therefore having a stronger force of gravity.
Earth completes a ______ in 24 hours?
Rotation on its axis.
Newtons law of Universal gravitation is......
Every object in the Universe attracts every other object.
How long does the moon take to complete an orbit around the Earth?
Around 27 days
When is the vernal equinox?
March 21st, when the sun is overhead at the equator.
What two forces work to keep the Earth in orbit of the Sun and the Moon in orbit of the Earth?
Gravity and Inertia
How many days is the Earth not tilted toward or away from the Sun?
Two days.
In a solar eclipse, how are the Earth, moon, and Sun lined up?
The Moon is directly between the Sun and Earth.
What causes the moon to be lit?
The sun reflecting off of the moon
How often are leap years and how many days do they add to the year?
They happen every four years and add one day to the year.
What two things affect the force of gravity?
Mass and Distance.
What happens when the Earth, Moon, and Sun aren't lined up exactly?
A Partial Lunar Eclipse.
What is the force of gravity on the Moon compared to Earth?
The Moons gravity is about 1/6 of the force of gravity on Earth.
Waning is when the moon does what?
Shrinks or decreases in shape
When the Southern Hemisphere is tilted towards the Sun what season is it? (for both hemispheres)
In the Southern Hemisphere it is Summer and in the Northern Hemisphere it is Winter.
When an object resists to change in motion, what is it called?
Inertia
What is path of the Earth called, and how long does it take for the Earth to complete?
An orbit and 365 days.
If you were in a car that suddenly stopped, however your body jolted forward, what force would that be?
Inertia
What is the darkest part and the lightest part of the moons shadow called? (Specify)
The Umbra (darkest)
The Penumbra (lightest)
Why do the Northern and Southern Hemisphere experience different seasons?
The Earths Axis is on a tilt, so one of the hemispheres is getting more direct sunlight.
Why do things weigh less on different planets?
The force of gravity changes on different planets
The Earths orbit shape is called?
An ellipse.
What unit is Gravity measured in?
Newtons