Reasons for the Seasons
What angle is the Earth tilted on its axis?
23.5 degrees
How long does the Earth take to go around the sun?
365 1/4 days
What is a revolution?
A revolution is the movement of Earth around the sun
What is a solstice?
A solstice is when the sun is directly overhead at 23.5 degrees north or south
When is the spring equinox?
A spring equinox occurs in March and marks the beginning of fall in the Northern Hemisphere
Why do we have seasons?
A tilted Earth is why we have seasons
When is the autumnal equinox?
An autumnal equinox occurs in September and marks the beginning of fall in the Northern Hemisphere
What is an axis?
An axis is the imaginary line that passes through Earth's center and the North and South poles
What is astronomy?
Astronomy is the study of the moon, stars, and other objects in space.
What is axis?
Axis is the line passing through Earth's center and poles
What is the definition of axis?
Axis: an imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates
Days are longer in ___.
Days are longer in SUMMER.
Days are shorter in ___.
Days are shorter in WINTER.
During what season does Alaska only get a couple of hours of darkness?
During the summer season, Alaska only gets a couple hours of darkness a day.
Earth's ___ affect everything on Earth
Earth's SEASONS effect everything on Earth.
At what degree is Earth's axis tilted?
Earth's axis is tilted 23.5 degrees
What is equinox?
Equinox is when the sun is directly above the equator
How long does it take Earth to make one full rotation?
It takes Earth 24 hours (1 day) to make a full rotation
Why is it cold in the winter?
It's cold in the winter because we get sunlight at an angle.
Why is it hot in the summer?
It's hot in the summer because we get sunlight head on.
What is latitude?
Latitude is a measurement of distance on the equator, expressed in degrees north or south.
What do June 21 and December 21 have in common?
On June 21 and December 21, the thing they have in common is the solstice
How long is one complete revolution around the Sun?
One complete revolution around the sun is 365-1/4 days.
What is orbit?
Orbit is the PATH of Earth as it resolves around the sun
What is the definition of phases?
Phases: the different shapes of the moon you see from Earth depends on the position of Earth, Moon, and Sun.
What is revolution?
Revolution is the movement of one object around another object
What is the definition of revolution?
Revolution: The movement of an object around another object
What does rotation cause?
Rotation causes day and night
What is a rotation?
Rotation is the spinning of Earth
What is rotation?
Rotation is when the movement of Earth is around the sun
What is the definition of rotation?
Rotation: the spinning motion of a planet about its axis
The ___ staying pointed the same way in space is the reason for seasons.
The AXIS staying pointed the same way in space is the reason for the seasons.
What is Earth spinning on its axis called?
The Earth spinning on its axis is called rotation
What is Earth's path as it revolves around Earth called?
The PATH that Earth revolves around is its orbit.
The ___ of the sun in the sky changes from day to day and month to month
The POSITION of the sun in the sky changes from day to day and month to month.
The what on a sundial goes the same direction as the hands on a clock?
The SHADOW on a sundial goes the same direction as the hands on a clock
What are the days of the equinox?
The days of the equinox is March 21 and Sept 21
What is it called when the days and nights the same all over the world?
The equinox is when all the days and nights in the world are the same (12 hrs day, 12 hrs night)
What day is the longest day of the year?
The longest day of the year is June 21
what is the reason for 12 hrs of daylight at the South Pole?
The reason for 12 hrs of daylight in the South Pole is because the South Pole is tilted directly toward the sun on about December,
What is the reason for autumn in the Northern Hemisphere and spring in the Southern Hemisphere?
The reason for autumn in the Northern Hemisphere and spring in the Southern Hemisphere is because Earth's tilt is sideways to the sun, and hours of daylight and darkness are the same in both hemispheres on both September 22
What is the reason for spring in the Northern Hemisphere and autumn in the Southern Hemisphere?
The reason for spring in the Northern Hemisphere and autumn in the Southern Hemisphere is because Earth's tilt is sideways to the sun and hours of daylight and darkness are the same on both hemispheres on about March 20th.
What is the reason for summer in the Northern Hemisphere?
The reason for summer in the Northern Hemisphere is because the North Pole is tilted almost directly toward the sun on about June 21st.
What's the reason for summer in the Northern Hemisphere?
The reason for summer in the Northern Hemisphere is because the Northern Hemisphere is tilted toward the sun for a few months.
What is the reason for summer in the Southern Hemisphere?
The reason for summer in the Southern Hemisphere is because the South Pole is tilted almost directly toward the sun on about December 21st
What is the reason for summer in the Southern Hemisphere?
The reason for summer in the Southern Hemisphere is because the Southern Hemisphere is tilted away toward the sun for a few months,
What is the reason for winter in the Northern Hemisphere?
The reason for winter in the Northern Hemisphere is because the South Pole is tilted away from the sun on December 21st.
What is the reason for winter in the Southern Hemisphere?
The reason for winter in the Southern Hemisphere is because the South Pole is tilted away from the sun on about June 21st.
What day is the shortest of the year?
The shortest day of the year is December 21
How many days is in 8 phases?
There are 28 days in 8 phases.
How many phases are there in 28 days?
There are 8 phases in 28 days
If a person is standing above the equator, would they see the sun? If so, where would the sun be in the sky?
They would see the sun directly above them.
True or false, in summer, Earth tilts toward the sun.
True, Earth tilts towards the sun during summer
True or false, in winter, Earth's axis is tilted away from the sun.
True, Earth's axis is tilted away from the sun during the winter
Why do we have seasons on Earth?
We have seasons because Earth is tilted
What's the reason for seasons?
We have seasons because Earth is tilted 23 1/2 degrees from a line perpendicular to its orbit, the length of daylight varies and because of the angle at which the sun's energy strikes a given location through the year.
When Earth is away from the sun, it's ___.
When Earth is away from the sun, it's NIGHTTIME.
When Earth is tilted away from the sun, what season is it?
When Earth is tilted away from the sun, it is winter.
When Earth is tilted toward the sun, what season is it?
When Earth is tilted toward the sun, it's summer.
When Earth is towards the sun, it's ___.
When Earth is towards the sun, it's DAYTIME.
When Earth's axis is tilted toward the sun, what season is it?
When Earth's axis is tilted toward the sun, it is summer
When the axis is tilted away from the sun, what season is it?
When the axis is tilted away from the Earth, it's winter.
