earth vocab … lessons 1, 2, 3
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Earth Vocab … Lessons 1, 2, 3. Quiz#1- Wednesday Review study materials!!. a body that orbits a planet. satellite. An object that orbits the sun Large enough to have become rounded by its own gravity. planets. - PowerPoint PPT PresentationTRANSCRIPT
Earth Vocab…Lessons 1, 2, 3
Quiz#1- WednesdayReview study materials!!
a body that orbits a planet.
satellite
An object that orbits the sun Large enough to have become rounded by
its own gravity.
planets
a streak of light produced when a small object burns up entering Earth’s atmosphere.
meteors
is a cold mixture of dust and ice that gives up a long trail of light as it approaches the sun.
comet
giant ball of hot gas Tiny points of light
stars
Is a pattern or groups of stars in the sky.
constellations
Imaginary line that passes through Earth’s center and the North and South poles
axis
Spinning of the Earth and moon around its axis.
rotation
It takes the Earth 365 ¼ days to complete one
Movement of the Earth around the Sun or the movement of the moon around the Earth revolution
Earth moves around the sun in a regular, curved path called a(n)
Earth’s ______ brings it closer to the sun in January
orbit
Caused by Earth’s tilted axis and its revolution around the sun
seasons
If the Northern Hemisphere is tilted away from the Sun, what season is occurring?
winter
What season occurs when part of Earth is tilted towards the Sun?
summer
What seasons occur when the Earth is neither tilted toward or away from the Sun?
Spring & Autumn/Fall
Sun appears farthest north of the equator and south each year
Longest day of the year in Northern Hemisphere and shortest day of the year in Southern Hemisphere
solstice
The sun is directly overhead at the equator Means “equal night” 12 hours of daylight and 12 hours of night
equinox
The Winter Solstice begins on
December 21 or 22
The Spring Equinox begins on
March 20 or 21
The Summer Solstice begins on
June 21 or 22
The Fall Equinox begins on
September 22 or 23
Attracts all objects to each other Keeps the Earth in an orbit around the sun Keeps the moon in an orbit around the Earth
gravity
Amount of matter in an object Remains constant
mass
Measure of the force of gravity on an object Changes depending on location
weight
Every object in the universe attracts every other object
Law of universal gravitation
Tendency of an object to resist a change in motion
Example: when a car is moving and suddenly stop; you keep moving forward
inertia
An object at rest will stay at rest and an object in motion will stay in motion unless acted on by a force
Newton’s first Law of motion