The Big Bang Theory
This theory suggests that the universe began as a singular, infinitely dense point about 13.8 billion years ago.
What is the Big Bang Theory?
This theory describes how the solar system formed from a rotating disk of gas and dust
What is the Solar Nebular Theory?
This gas makes up 96.5% of the atmosphere of Venus.
What is carbon dioxide?
Earth completes one revolution around the Sun in this number of days
What is 365.24 days?
Tides are primarily caused by the gravitational pull of this celestial body
What is the Moon?
The initial state of the universe was this, a point of infinite density and temperature where the laws of physics break down
What is the initial singularity?
This planet is the smallest terrestrial planet, with a diameter of 3,032 miles.
What is Mercury?
Earth's atmosphere is 78% of this gas
What is nitrogen?
Earth's axis is tilted at this angle, responsible for the changing seasons
What is 23.5 degrees?
Coastal areas experience this many high tides every day.
What is two?
After the Big Bang, the universe did this, resulting in cooling and the formation of particles
What is expansion?
The largest planet in the solar system, this gas giant has a diameter of 86,881 miles.
What is Jupiter?
This gas makes up 90% of Jupiter’s composition.
What is hydrogen?
This term describes the point in Earth’s orbit when it is closest to the Sun
What is perihelion?
Exceptionally high and low tides, occurring during full or new moons, are known by this name.
What are spring tides?
This type of radiation, a faint glow from the early universe, is one of the key pieces of evidence supporting the Big Bang Theory
What is the cosmic microwave background radiation?
The sun is mostly composed of this element, making up 74% of its mass.
What is hydrogen?
Saturn’s atmosphere is primarily composed of this element, which makes up 96%.
What is hydrogen?
This slow wobble of Earth’s axis, taking about 26,000 years, will eventually shift Earth’s pole star from Polaris to Vega.
What is precession?
These moderate tides occur when the Sun and Moon are at right angles to each other
What are neap tides?
The shift of light from distant galaxies toward longer wavelengths is known as this, proving that the universe is expanding
What is redshift?
This planet has the longest orbital period, taking about 165 Earth years to orbit the Sun.
What is Neptune?
This planet has a surface temperature of about 864°F, making it the hottest planet in the solar system
What is Venus?
A sidereal day, used by astronomers, is shorter than a mean solar day by this amount of time.
What is 3 minutes and 56 seconds?
Tidal tables predict the timing of high and low tides based on the predictable movements of these two celestial objects
What are the Moon and the Sun?