planets
Definition of solar system
A group of planets and other bodies that revolve around a star
How long is the moon’s revolution around Earth?
29.5 days
Definition of revolution
Movement of one object around another object
What is an asteroid?
Asteroid is a rocky metallic body that orbits the sun
What two main types of planets are there?
Terrestrial and gas
What is the moon phase right after a new moon?
Waxing Crescent
Definition of rotation
A planet spins on axis, or an object spins around itself
What are these?
Core, radiative zone, convection zone, photosphere, chromosphere, corona
the layers of the sun
What is the shape of Earth’s orbit?
elliptical
What is the moon phase right after a full moon?
Waning Gibbous
Describe what a comet is
An object made of ice, gas, and dust that orbits the sun.
where are asteroids found
located in asteroid belt between Mars and Jupiter-thankfully!
List the planets in order from the sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What are the moons that appear to be half lit called?
1st and 3rd quarter moons
Why would a person’s weight change on a planet with either more or less mass?
Weight is the measure of gravitational pull, so a person would weigh less on a less massive planet and more on a more massive planet
Photosynthesis, heating, weather,
Vision, energy to power the food web are all what?
what the sun provides Earth
List the qualifications for an object to be considered a planet.
Orbit a star
enough mass to be a round shape
Cleared its neighborhood of debris-cleared its path.
Explain why there are different phases of the moon
The phases of the moon are caused by the relative positions of the Earth, Sun, and Moon. The moon doesn't produce its own light, so we can only see the parts of the moon that are illuminated by the sun. As the moon orbits the Earth, the portion of the moon that's lit up changes, creating the phases of the moon.
What must an object have to have a gravitational pull?
Mass
why comets are so valuable to scientists
Comets are important because they appear to have the ingredients necessary for life, so they may have provided this to Earth in a collision billions of years ago.