Universe
What are stars made of?
Stars are gigantic balls of exploding gas held together by gravity.
How many stars in our solar system?
One. The sun is the only star in our solar system. All other stars are found far beyond our solar system.
What is the scientific term for "shooting star"?
Meteor
What is responsible for Earth's day and night?
Earth's rotation
Weight vs Mass
Weight -> related to gravity; depends on the gravitational force (Earth vs Moon)
Mass -> remains constant
What do stars produce?
Light and heat
Why does the earth orbit the sun?
The sun's gravity!
Why do some stars in the sky look brighter than others?
Stars can appear brighter or dimmer due to a variety of reasons, most commonly their size and their distance from the earth.
What is responsible for Earth's seasons? (2 things)
tilted axis and revolution around the sun
What is a comet's "tail"?
Ice melting from the heat of the sun
What is a light year?
How FAR light can travel in a year.
Name the terrestrial planets.
Mercury, Venus, Earth, Mars
What makes something a meteorite?
About how old is Earth?
~4.6 billion years
What is spaghettification?
A real term that describes what happens when matter gets too close to a black hole. It’s squeezed horizontally and stretched vertically, resembling a noodle.