Discovering The Universe Flashcards
What is the name of the theory that suggests the Earth was formed from rocks?
Big Bang Theory
True or False: The Big Bang Theory explains the formation of the Earth.
False
Which planet is known as the ‘Red Planet’?
Mars
What is the name of the theory that suggests the Earth’s continents were once connected in a single landmass?
Continental Drift Theory
Fill in the blank: The Earth is approximately ________ years old.
4.5 billion
Which planet is the largest in our solar system?
Jupiter
What is the name of the theory that suggests the moon was formed from debris after a collision between Earth and a Mars-sized body?
Giant Impact Hypothesis
True or False: The Earth’s core is primarily composed of iron and nickel.
True
Which planet is known for its beautiful rings?
Saturn
What is the name of the theory that suggests the Earth’s crust is divided into tectonic plates that move over the mantle?
Plate Tectonics Theory
Fill in the blank: The Earth’s atmosphere is composed mainly of ________ and ________.
nitrogen, oxygen
Which planet is closest to the Sun?
Mercury
True or False: The Earth’s moon is the largest moon in the solar system.
False
What is the name of the theory that suggests the Earth’s surface features were shaped by slow-moving glaciers?
Glacial Theory
Fill in the blank: The Earth’s inner core is believed to be solid due to ________ pressure.
high
Which planet is known for its blue color and methane-rich atmosphere?
Uranus
What is the name of the theory that suggests the Earth’s magnetic field is generated by movements in the outer core?
Dynamo Theory
True or False: Earth is the only planet in our solar system with liquid water on its surface.
True
Which planet is known as the ‘Evening Star’ or ‘Morning Star’?
Venus
What is the name of the theory that suggests the Earth’s early atmosphere was rich in methane and ammonia?
Primordial Soup Theory
What country made the geocentric model?
Greece
What country thought the Solar system was on a giant turtle?
Thailand
What country thought the earth was flat?
India
What is the name of our galaxy?
The Milky Way
How many arms does the Milky Way galaxy have?
Four
What is the central bulge of the Milky Way made of?
Old stars and dust
What is located at the center of the Milky Way galaxy?
A supermassive black hole
What is the approximate diameter of the Milky Way galaxy?
100,000 light-years
