Earth's Orbit and Seasonal Changes

The video explains how Earth's tilt and elliptical orbit affect seasons. It clarifies that the tilt, not the distance from the sun, causes seasons. The video also discusses perihelion and aphelion, noting that Earth is closest to the sun in January and farthest in July. This results in longer summers in the northern hemisphere due to slower orbital speed when farther from the sun.

What causes the different seasons on Earth?

• The distance from the sun

• The speed of Earth's rotation

• The tilt of the Earth's axis

• The shape of Earth's orbit

What is the term for the closest point in an orbit to the object it is orbiting?

• Equinox

• Aphelion

• Periapsis

• Solstice

What is the term for the farthest point in an orbit from the object it is orbiting?

• Perihelion

• Aphelion

• Solstice

• Equinox

How does gravity affect the Earth's speed in its orbit?

• The Earth moves at a constant speed

• Gravity has no effect on speed

• The Earth moves slower when closer to the sun

• The Earth moves faster when closer to the sun

What is the Greek term for the sun used in orbital terminology?

• Gaia

• Luna

• Helios

• Astra

When is the Earth closest to the sun?

• January

• October

• April

• July

Which month is the Earth farthest from the sun?

• July

• September

• January

• March

What is the main factor that causes the seasons on Earth?

• The Earth's elliptical orbit

• The Earth's speed in orbit

• The Earth's tilt

• The Earth's distance from the sun

Why are summers longer than winters in the Northern Hemisphere?

• The Earth is closer to the sun in summer

• The Earth's orbit is faster in summer

• The Earth's orbit is slower in summer

• The Earth's tilt is greater in summer

What is the effect of the Earth's elliptical orbit on the length of seasons?

• It has no effect

• It makes all seasons equal

• It makes summers longer

• It makes winters longer