The Solar System And Beyond Lesson 1 Flashcards
The path one object travels around another object
Orbit
The force of attraction between any two objects due to their mass
Gravity
The tendency of an object to keep moving in a straight line
Inertia
One complete trip of one object around another object
Revolution
A complete spin on an axis
Rotation
An instrument that makes distant objects seem larger
Telescope
The sun and all objects that orbit around it is called the __________
Solar System
A ______ is any object that orbits another larger body
Satellite
A _________ is a large, round object in space that orbits another star
Planet
________ is the 1st planet from the Sun
Mercury
__________ is the 2nd planet from the Sun
Venus
__________ is the 3rd planet from the Sun
Earth
_______ is the 4th planet from the Sun
Mars
________ is the 5th planet from the Sun
Jupiter
_______ is the 6th planet from the Sun
Saturn
________ is the 7th planet from the Sun
Uranus
__________ is the 8th planet from the Sun
Neptune
___________ planets are made of rock and ice and their orbits cross the paths of other space objects
Dwarf
The _____ is the center of the Solar System
Sun
_______ and ________ keep the Earth and all other planets, in orbit around the Sun
Gravity, Inertia
The _____ is the only natural satellite of the Earth
Moon
The moon’s gravity affects the Earth because it causes the Earth’s _______
Tides
When half of the Earth’s surface faces the Sun, we are having ________
Daylight
When half of the Earth’s surface faces away from the Sun, we are having __________
Darkness
_____________ is the way something seems to move
Apparent motion
As the Earth rotates from West to East, objects appear to move from ________ to _________
East, West
The Sun does not ______
Move
Earth’s orbit around the Sun takes ____________ days or one year
365 1/4
The ___________ happen because of both the Earth’s tilted axis and its revolution the Sun
Seasons
When the Northern Hemisphere tilts away from the Sun, it is having _______ and the Southern Hemisphere is having summer
Winter
When the Northern Hemisphere tilts toward the Sun, it is having ________ and the Southern Hemisphere is having winter
Summer
The Northern Hemisphere’s summer solstice occurs around __________ each year
June 21
The Northern Hemisphere’s winter solstice occurs around __________
December 21
