Front

Why did Brahe hire Kepler as his research assistant?

Back

Because Brahe needed Kepler to make mathematical calculations to prove his theory.

Front

Which of the following is NOT a contribution of Brahe in the field of astronomy?

• He devised the first-ever telescope.
• He revolutionized astronomical instrumentation.
• He changed the observational practice profoundly.
• He designed, built, and calibrated astronomical instruments precisely.

Back

He devised the first-ever telescope.

Front

Which statement is CORRECT about the law of ellipses?

Back

Planets move in an elliptical orbit with the sun as one of the foci.

Front

Which law of planetary motion states that planets sweep equal areas of their orbit over equal time intervals?

Back

Law of equal areas

Front

Which law of planetary motion states that the square of the orbital period of a planet is proportional to the cube of the mean distance from the sun?

Back

Law of periods

Front

Which of the following is NOT Brahe’s contribution?

• He made observations of a supernova in 1572.
• He made careful observation of a comet in 1577.
• He formulated the three laws of planetary motion.
• He designed and built astronomical instruments precisely.

Back

He formulated the three laws of planetary motion.

Front

Which view of the universe was supported by the laws of planetary motion? Options: Geocentric view, Heliocentric view, Tychonic view, Geoheliocentric view

Back

Heliocentric view

Front

Based on the first law of planetary motion, what is the shape of the planetary orbits?

Back

Ellipse

Front

Which among Brahe’s contributions in astronomy paved the way for the formulation of Kepler’s Law of Ellipses?

Back

He made observations of planetary motion, particularly that of planet Mars.

Front

Which of the instruments below is not yet invented during Brahe’s time? Quadrant, Telescope, Compass, Astrolabe

Back

Telescope