What is the difference between the Heliocentric and Geocentric models of our Solar System?

Geo=Earth in the Center. Helio=Sun in the center.

If the Earth orbits the sun a 107,000 miles p/hr, why doesn't it spin out of the solar system?

Sun's gravity keeps it in orbit

the distance light travels in a year

Which of the following lists the objects from Largest to Smallest

universe-galaxy-solar system-star

Copernicus explained that

the sun is at the center of the system of planets

Where in the Milky Way can our solar system be found?

on one of the outer arms of the galaxy

Which best describes a galaxy?

a cluster of billions of stars.

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Unit 1 Models of the Universe and Solar System 2019-2020

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Answers

1
The solar system formed from
an enormous explosion
an expanding galaxy
a giant cloud of gas and dust
a black hole
2
What is the difference between the Heliocentric and Geocentric models of our Solar System?
Geo=Sun in the Center. Helio=Earth in the center.
Geo=Moon in the Center. Helio=Sun in the center.
Geo=Earth in the Center. Helio=Sun in the center.
Geo=Earth in the Center. Helio=Moon in the Center.
3
Which of these models of the universe did Copernicus’s system support?
Earth revolved around the sun.
Earth was the center of the universe.
Earth had different paths in the universe.
The sun was the center of the universe.
4
Refers to a model of the solar system that is sun-centered
GEOCENTRIC
HYDROCENTRIC
HELIOCENTRIC
PARACENTRIC
5
The heliocentric system, Earth revolves around
Mars
stars
moon
sun
6
The force that tends to pull together the matter in stars is
nuclear fusion
gravity
dark energy
dark matter
7
who created this model of our solar system?
Phtolmy
Aristotle
Ptolemy
Eratosthenes
8
The Milky Way galaxy is thickest in ?
our solar system
the inner arms
the outer arms
the center
9
If the Earth orbits the sun a 107,000 miles p/hr, why doesn't it spin out of the solar system?
Sun's gravity keeps it in orbit
Sun's inertia keeps it in orbit
Earth's weight keeps it from spinning out of solar system
Earth's inertia keeps it in orbit
10
A light year is
the amount of light the sun produces in a year
the distance from Earth to Proxima Centauri
365 days
the distance light travels in a year
11
What are the main models of the solar system?
geo & helio
Geocentric and heliocentric
Heliocentric
Geocentric
12
Which of the following lists the objects from Largest to Smallest
universe-solar system-star-galaxy
universe-galaxy-solar system-star
star-solar system-galaxy-universe
galaxy-solar system-universe-star
13
Copernicus explained that
the sun is at the center of the system of planets
the sun and the planets revolve around Earth
14
Where in the Milky Way can our solar system be found?
on the very outer edge of the galaxy
our solar system is not located in the Milky way
on one of the outer arms of the galaxy
in the center of the galaxy
15
What are two factors that combine to keep Earth and the moon in their orbits
gravity and orbital speed
mass and inertia
gravity and inertia
orbital speed and mass
16
All objects are attracted to each other by the force of
gravity
inertia
weight
mass
17
This astronomer developed the system that models the sun in the center of the solar system.
Nicolaus Copernicus
Johannes Kepler
Isaac Newton
Galileo Galilei
18
The solar system formed from
a black hole
a giant cloud of gas and dust
an expanding galaxy
an enormous explosion
19
Which of the following is thought to have occurred FIRST?
formation of the Milky way galaxy
formation of the solar system
formation of the sun
the Big Bang
20
A (an) _______ galaxy has a characteristic pinwheel shape.
heliocentric
geocentric
spiral
Milky way
21
Which best describes a galaxy?
includes all the stars
a cluster of billions of stars.
includes all planets, asteriods, comets in the universe
somewhat like the solar system but larger
22
Our Solar system is located in the ______ galaxy?
geocentric
spiral
heliocentric
Milky way
23
theory that Astronomers have developed to describe the formation of the universe is called
galactic expansion theory
big bang theory
collision-ring theory
big crunch theory

Unit 1 Models of the Universe and Solar System 2019-2020 Flashcards | StudBud