EOCA DC ASTRO

Front

What are the phases of the Moon?

Back

The phases of the Moon are the different appearances of the Moon as seen from Earth, which include new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, and waning crescent.

Front

Why can some phases of the Moon be observed during the daytime?

Back

Waxing and waning phases can occur in the daytime sky.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing very large or very small numbers in the form of a number between 1 and 10 multiplied by a power of 10.

Front

How does scientific notation simplify large astronomical numbers?

Back

It simplifies handling very large or small numbers.

Front

Who was Tycho Brahe?

Back

Tycho Brahe was a Danish astronomer known for his accurate and comprehensive astronomical observations.

Front

What was Tycho Brahe’s main contribution to astronomy?

Back

Brahe provided accurate data on the positions of stars and planets.

Front

Who was Johannes Kepler?

Back

Johannes Kepler was a German astronomer who formulated the laws of planetary motion based on Brahe's data.

Front

What are Kepler's laws of planetary motion?

Back

Kepler's laws describe the motion of planets around the Sun: 1) Planets move in elliptical orbits with the Sun at one focus. 2) A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. 3) The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.

Front

What distinguishes a constellation from an asterism?

Back

Constellations are official star groupings recognized by astronomers, while asterisms are smaller patterns of stars that may be part of a constellation.

Front

What is a constellation?

Back

A constellation is a recognized group of stars that form a pattern in the night sky.