Kepler`s Laws

What is the description of Kepler's laws about the planet of the Sun ?

• All the planets moving around the SUN

• Sun is moving around the planet

• None

• Anything

Firs law of Kepler?

• None

• The orbit of planet is an ellipse with the Sun at one of the two foci

• The radius vector of a planet sweeps over equal areas in equal time intervals of time.

• The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit

What is the line connecting the sun and planet

• Line

• Area

• Imagine

• Radius vector

What is the third law of Kepler

• A planet travels in an ellipse with the Sun at one focus.

• The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.

• The radius vector of a planet sweeps over in equal area in aqual interval of time.

• None

What is the second law of Kepler ?

• The radius vector of a planet sweeps over in equal areas in equal intervals of time.

• All planets move around the Sun in elliptical orbits, with the Sun as one focus of the ellipse.

• The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.

• None

Who was Kepler?

• Scientist

• Chemist

• German Astronomer and mathematician

• Journalist

What family is he from?

• His parents was poor

• His parents was rich

• He didn't have a family

• He is from a boarding school

What is his nationality

• Chinese

• German

• Turkish

• Russian

Types of celestial coordinate system

• Latitude and longitude

• altitude and azimuth

• Ecuatorial and horizontal

• None