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 are called the
Solar System
A_______ is any object that orbits another larger body
Satellite
A_______ is a large, round object in space that orbits a 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 obits cross the paths of other stars
space objects
Dwarf planets
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 moons gravity affects the Earth because it causes the Earths ______
Tides
When half of the Earths surface faces the sun, we are having ________
Daylight
When half of the Earths 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 doesn’t _______
Move
Earths orbit takes _____ days or one year
365 1/4
The _____ happen because of both the Earths tilted axis and its revolution around 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 Hemispheres winter solstice occurs around _______
December 21
