Reasons for the Seasons – Flashcards

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.

The reason for summer in the Northern Hemisphere is because the Northern Hemisphere is tilted toward the sun for a few months.

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

The reason for summer in the Northern Hemisphere is because the North Pole is tilted almost directly toward the sun on about June 21st.

The reason for winter in the Southern Hemisphere is because the South Pole is tilted away from the sun on about June 21st.

The reason for summer in the Southern Hemisphere is because the Southern Hemisphere is tilted away toward the sun for a few months,

The reason for winter in the Northern Hemisphere is because the South Pole is tilted away from the sun on December 21st.

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.

The reason for summer in the Southern Hemisphere is because the South Pole is tilted almost directly toward the sun on about December 21st

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,

Astronomy is the study of the moon, stars, and other objects in space.

Axis is the line passing through Earth's center and poles

Rotation is when the movement of Earth is around the sun

A revolution is the movement of Earth around the sun

Orbit is the PATH of Earth as it resolves around the sun

Latitude is a measurement of distance on the equator, expressed in degrees north or south.

Equinox is when the sun is directly above the equator

A solstice is when the sun is directly overhead at 23.5 degrees north or south

A spring equinox occurs in March and marks the beginning of fall in the Northern Hemisphere

An autumnal equinox occurs in September and marks the beginning of fall in the Northern Hemisphere

They would see the sun directly above them.

An axis is the imaginary line that passes through Earth's center and the North and South poles

Rotation is the spinning of Earth

Revolution is the movement of one object around another object

True, Earth tilts towards the sun during summer

True, Earth's axis is tilted away from the sun during the winter

Days are longer in SUMMER.

Days are shorter in WINTER.

Earth's SEASONS effect everything on Earth.

We have seasons because Earth is tilted

When Earth is towards the sun, it's DAYTIME.

When Earth is away from the sun, it's NIGHTTIME.

When Earth is tilted toward the sun, it's summer.

When Earth is tilted away from the sun, it is winter.

23.5 degrees

It's hot in the summer because we get sunlight head on.

It's cold in the winter because we get sunlight at an angle.

During the summer season, Alaska only gets a couple hours of darkness a day.

365 1/4 days

The AXIS staying pointed the same way in space is the reason for the seasons.

The SHADOW on a sundial goes the same direction as the hands on a clock

On June 21 and December 21, the thing they have in common is the solstice

The longest day of the year is June 21

The shortest day of the year is December 21

The equinox is when all the days and nights in the world are the same (12 hrs day, 12 hrs night)

The days of the equinox is March 21 and Sept 21

The POSITION of the sun in the sky changes from day to day and month to month.

A tilted Earth is why we have seasons

Rotation: the spinning motion of a planet about its axis

Revolution: The movement of an object around another object

The Earth spinning on its axis is called rotation

Rotation causes day and night

It takes Earth 24 hours (1 day) to make a full rotation

One complete revolution around the sun is 365-1/4 days.

The PATH that Earth revolves around is its orbit.

Axis: an imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates

Earth's axis is tilted 23.5 degrees

When the axis is tilted away from the Earth, it's winter.

When Earth's axis is tilted toward the sun, it is summer

Phases: the different shapes of the moon you see from Earth depends on the position of Earth, Moon, and Sun.

There are 28 days in 8 phases.

There are 8 phases in 28 days