Space Exploration

1. What is the geocentric model of planetary motion?

The geocentric model posits that every planet in the solar system has its own unique center, with Earth being just one of them.

The geocentric model suggests that planets orbit around the Sun, with Earth as one of the planets in the solar system.

- The Greek philosopher Aristotle proposed this model 2000 years ago
- Earth is at the centre, surrounded by cencentric spheres represtenting the paths of the Sun, Moon, and five plantets
- distant stars did not move as they were attached firmly to the outermost sphere (celestial sphere)

The geocentric model states that all celestial bodies orbit around the Moon, which is at the center of the universe.

The geocentric model of planetary motion was a widely accepted idea in ancient times before the heliocentric model was proposed by Copernicus and Galileo. The correct answer describes how Earth was considered the center of the universe in this model with other celestial bodies revolving around it.

Explanation

The geocentric model of planetary motion was a widely accepted idea in ancient times before the heliocentric model was proposed by Copernicus and Galileo. The correct answer describes how Earth was considered the center of the universe in this model with other celestial bodies revolving around it.

2. What did the geocentric model allow early astronomers to forecast?

Movements of planets

Solar eclipses

Comet appearances

Phases of the Moon

The geocentric model posited that the Earth was at the center of the universe with other celestial bodies revolving around it. This model was used to predict the phases of the Moon, as the Moon's changing appearance was influenced by its position relative to the Earth and the Sun.

Explanation

The geocentric model posited that the Earth was at the center of the universe with other celestial bodies revolving around it. This model was used to predict the phases of the Moon, as the Moon's changing appearance was influenced by its position relative to the Earth and the Sun.

3. Which five planets were known in Aristotle's time?

Saturn, Mars, Pluto, Venus, Neptune

Mercury, Venus, Earth, Mars, Jupiter

Uranus, Neptune, Earth, Mars, Jupiter

Mars, Jupiter, Venus, Saturn and Mercury

During Aristotle's time, the planets known were Mars, Jupiter, Venus, Saturn and Mercury. The other options either include planets discovered later in history or exclude some of the planets known during that period.

Explanation

During Aristotle's time, the planets known were Mars, Jupiter, Venus, Saturn and Mercury. The other options either include planets discovered later in history or exclude some of the planets known during that period.

4. Who confirmed Copernicus' theory?

Isaac Newton

With the invention of the telescope in the 1600's, Galileo Galilei confirmed the heleocentric model.

Johannes Kepler

Albert Einstein

Although Isaac Newton, Albert Einstein, and Johannes Kepler made significant contributions to the field of astronomy, it was Galileo Galilei who confirmed Copernicus' heliocentric model with the invention of the telescope in the 1600's.

Explanation

Although Isaac Newton, Albert Einstein, and Johannes Kepler made significant contributions to the field of astronomy, it was Galileo Galilei who confirmed Copernicus' heliocentric model with the invention of the telescope in the 1600's.

5. What crucial contributions led to the refinement of Copernicus' theory?

B. Spanish explorer, Christopher Columbus navigated previously unknown routes to the Americas.

- Danish astronomer, Tyco Brahe studied and recorded the movement of the planets.
- German mathematician, Johannes Kepler realized the orbits were ellipses and not circles.

A. Italian physicist, Galileo Galilei discovered Jupiter's four largest moons.

C. Polish scientist, Marie Curie conducted pioneering research on radioactivity.

Tycho Brahe's detailed observational data and Kepler's mathematical insights were crucial in advancing the understanding of the heliocentric model proposed by Copernicus.

Explanation

Tycho Brahe's detailed observational data and Kepler's mathematical insights were crucial in advancing the understanding of the heliocentric model proposed by Copernicus.