The Make-up of our Solar System

What is the primary source of energy for the Sun?

• Chemical reactions

• Nuclear fusion

• Gravitational pull

• Solar winds

Which planets are considered terrestrial planets?

• Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars

• Pluto, Eris, Haumea, Makemake

• Venus, Jupiter, Saturn, Neptune

What is the main characteristic of gas giants?

• Rocky surfaces

• Small size

• Thick atmospheres

• Close proximity to the Sun

What does gravitational force depend on?

• Color and brightness

• Mass and distance

• Temperature and size

• Speed and direction

What happens to a planet's orbit and temperature as it gets farther from the Sun?

• Faster orbit and warmer temperature

• Slower orbit and colder temperature

• Faster orbit and colder temperature

• Slower orbit and warmer temperature

Who formulated the Law of Universal Gravitation?

• Albert Einstein

• Galileo Galilei

• Isaac Newton

• Nicolaus Copernicus

What role does gravity play in planet formation?

• Separates gas and dust

• Pulls gas and dust together

• Increases temperature

• Decreases mass

What is the effect of the Moon's gravity on Earth?

• Causes earthquakes

• Affects ocean tides

• Changes weather patterns

• Alters magnetic fields

What is the geocentric model?

• Sun at the center, planets orbit it

• Earth at the center, celestial bodies orbit it

• Moon at the center, stars orbit it

• Mars at the center, asteroids orbit it

Who proposed the heliocentric model?

• Ptolemy

• Copernicus

• Galileo

• Newton