Numbers
The Earth takes how long to rotate around itself?
24 hours or 1 day
What is it called when the Moon goes around the Earth?
Revolution
The Moon blocks the Sun’s light from reaching the Earth causing…
a Solar Eclipse
A day when daytime hours and nighttime hours are equal.
Equinox (Vernal/Spring or Autumnal/Fall)
Cool regions of gas on the surface of the Sun are called:
sunspots
What does the calendar do with the extra quarter day every four years?
Adds a Leap Day (Feb 29th)
The Moon takes how long to go from Full Moon to Full Moon?
29.5 days
What is it called when Earth goes around itself?
Rotation
The tilt of the Earth causes different amounts of light to reach the Northern hemisphere of the Earth during different times in its orbit causing..
the Seasons.
The day with the lowest number of daytime hours
The Winter Solstice
The surface of the Sun is called the:
photosphere
The day with the highest number of daytime hours
The Summer Solstice
The Earth takes how long to revolve around the Sun?
365.25 days
What is it called when Earth goes around the Sun?
Revolution
The Sun and Moon each pull on the Earth’s oceans causing..
Tides
During the winter, the northern hemisphere of the Earth is tilted…
away from the Sun
Bright spots that appear suddenly on the surface of the Sun are called:
Flares
Every day, there are ___ high tides and ___ low tides.
The Earth is tilted to the Sun by how much?
23.5 degrees
Which is different for different parts of the Sun?
Rotation
The Sun’s charged particles enter the Earth’s atmosphere at the north pole causing…
the Northern Lights (Aurora Borealis)
During the summer, the northern hemisphere of the Earth is tilted…
toward the Sun
Huge explosions of charged particles from the surface of the Sun are called:
CMEs (Coronal Mass Ejections)
What is the special distance name for the Earth-Sun distance?
Astronomical Unit
How far is the Earth - Sun distance in miles?
93 million miles (150 million km)
Why does the Moon always show the same side to the Earth?
Its revolution and rotation are both 27 days. (The rotation and revolution numbers are the same.)
When a solar flare releases billions of charged particles from the Sun and threatens to damage satellites, cell phone service, and electrical lines, it is called …
a CME (Coronal Mass Ejection)
The season the Earth is farthest from the Sun is
Summer
Sun makes _____________ energy by combining
__________atoms to make ______ atom
nuclear; 4 hydrogen, one helium
What is it called when the revolution and rotation are the same number?
Tidal Locking