8R Astronomy Flashcard 2 Review - Rotation, Revolution, and Seasons

Front

What is the December solstice and how does it affect the Southern Hemisphere?

Back

The December solstice occurs around December 21st and marks the point when the Southern Hemisphere experiences its summer season due to the tilt of the Earth's axis.

Front

How does the sun appear to move across the sky due to Earth's rotation?

Back

The sun appears to rise in the east and set in the west as a result of Earth's rotation on its axis.

Front

What causes star trails in the night sky?

Back

Star trails are caused by the rotation of the Earth on its axis, which makes stars appear to move in circular paths.

Front

What is the significance of the Northern Hemisphere in relation to seasons?

Back

The Northern Hemisphere experiences opposite seasons to the Southern Hemisphere; when it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere.

Front

What season is represented in the Northern Hemisphere during Position 1 of the Earth's orbit?

Back

Winter is taking place in the Northern Hemisphere during Position 1.

Front

What is the difference between rotation and revolution in astronomy?

Back

Rotation refers to the spinning of an object around its own axis, while revolution refers to the movement of an object around another object in an orbit.

Front

How long does it take for the Earth to complete one full rotation?

Back

It takes approximately 24 hours for the Earth to complete one full rotation on its axis.

Front

How long does it take for the Earth to complete one full revolution around the sun?

Back

It takes about 365.25 days for the Earth to complete one full revolution around the sun.

Front

What is the axial tilt of the Earth and how does it affect seasons?

Back

The Earth's axial tilt is approximately 23.5 degrees, and it affects the intensity and duration of sunlight received at different latitudes, leading to the changing seasons.

Front

What is the equinox and when does it occur?

Back

An equinox occurs when day and night are approximately equal in length, happening around March 21st (vernal equinox) and September 23rd (autumnal equinox).