Semester 1 Finals Flashcardizz

Front

What is an Astronomical Unit (AU)?

Back

An Astronomical Unit (AU) is the average distance from the Earth to the Sun, approximately 93 million miles or 150 million kilometers.

Front

What can we infer if Mars is 1.02 AU from Earth?

Back

It is about the same distance from the Sun as Earth, since 1 AU is the distance from Earth to the Sun.

Front

What is the longest day of the year called?

Back

The longest day of the year is called the summer solstice.

Front

What is a trough in a wave?

Back

The trough is the lowest point of a wave, opposite to the crest.

Front

Which planets have no moons?

Back

Mercury and Venus are the planets with no moons.

Front

How do you calculate the perihelion distance of a planet?

Back

The perihelion distance can be calculated using the formula: perihelion distance = semi-major axis - linear eccentricity.

Front

What is the perihelion distance of a planet with a semi-major axis of 6.89 AU and a linear eccentricity of 4.56 AU?

Back

The perihelion distance is 2.33 AU.

Front

What is the significance of the summer solstice?

Back

The summer solstice marks the longest day of the year and the start of summer in the Northern Hemisphere.

Front

What is the relationship between distance in AU and the distance to the Sun?

Back

Distances in AU are directly proportional to the distance from the Sun, where 1 AU is the distance from Earth to the Sun.

Front

What is the definition of a wave crest?

Back

A wave crest is the highest point of a wave, opposite to the trough.