EARTH SCIENCE 1086 UNIT 1 | 2025-2026 LATEST UPDATED|45 REAL
EXAM | COMPLETE QUESTIONS AND ANSWERS | 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+
What is the heliocentric model? - (answer)Sun is at the center of the Solar System
What is the geocentric model? - (answer)Earth is at the center of the Solar System
Define perihilon - (answer)The point of nearest approach of a planet to the Sun
Define aphelion - (answer)The point of greatest separation
How did Aristarchus contribute to the heliocentric model? - (answer)he
experimented with placing Sun at the centre. Satisfied that the geometry seemed to
work - and seemed able to predict events in the Solar System
How did Copernicus contribute to the heliocentric model? - (answer)he also put the
Sun at the centre of the system, had Earth rotate about the Sun, and had Earth
revolve on an axis once per day
, How did Kepler contribute to the heliocentric model? - (answer)Kepler's First Law
defines the construction of an ellipse because he realized that planets did not move
in perfectly circular paths. With the Sun as one focal point and the other a
hypothetical point in space, the sum of the distances of any point on the ellipse
from the two foci is a constant - which means that the Earth-Sun distance is
constantly changing as the planet goes around its orbit
How did Galileo contribute to the heliocentric model? - (answer)Was the first to
see planets through a telescope.
Is the sun a main sequence star? - (answer)Yes, as seen on the Hertzprung russel
diagram
What is the structure of the Sun (name the layers) - (answer)(starting from outer
most to inner):
Corona
Chromosphere
Photosphere
Convection zone
Radiation zone
EXAM | COMPLETE QUESTIONS AND ANSWERS | 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+
What is the heliocentric model? - (answer)Sun is at the center of the Solar System
What is the geocentric model? - (answer)Earth is at the center of the Solar System
Define perihilon - (answer)The point of nearest approach of a planet to the Sun
Define aphelion - (answer)The point of greatest separation
How did Aristarchus contribute to the heliocentric model? - (answer)he
experimented with placing Sun at the centre. Satisfied that the geometry seemed to
work - and seemed able to predict events in the Solar System
How did Copernicus contribute to the heliocentric model? - (answer)he also put the
Sun at the centre of the system, had Earth rotate about the Sun, and had Earth
revolve on an axis once per day
, How did Kepler contribute to the heliocentric model? - (answer)Kepler's First Law
defines the construction of an ellipse because he realized that planets did not move
in perfectly circular paths. With the Sun as one focal point and the other a
hypothetical point in space, the sum of the distances of any point on the ellipse
from the two foci is a constant - which means that the Earth-Sun distance is
constantly changing as the planet goes around its orbit
How did Galileo contribute to the heliocentric model? - (answer)Was the first to
see planets through a telescope.
Is the sun a main sequence star? - (answer)Yes, as seen on the Hertzprung russel
diagram
What is the structure of the Sun (name the layers) - (answer)(starting from outer
most to inner):
Corona
Chromosphere
Photosphere
Convection zone
Radiation zone
