Earth and Space: Patterns in the Sky
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Science
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4th Grade
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Easy
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84 Slides • 17 Questions
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Earth and Space- Patterns in the Sky
pp.304-305
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Open Ended
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1. Stars are bright, huge balls of gas.
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2. They get super hot and bright by burning one gas, hydrogen, into another gas, helium.
Credit: NASA, ESA, STScI
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Multiple Choice
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3. Stars are found in huge groups called galaxies.
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Earth is part of a solar system that belongs to MILKY WAY GALAXY.
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Our galaxy alone contains hundreds of billions of stars.
Milky Way Galaxy
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4. Stars vary in size, temperature, brightness, and color.
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Types of Stars According to Size
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Multiple Choice
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Multiple Choice
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*A star can shrink or grow.
*Small stars last longer than large stars.
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Stars usually begin as dwarf stars. These are small, but they can last for millions (even billions) of years.
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Open Ended
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Yes, stars do die.
After shining for billions of years, a star uses up all its hydrogen.
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Small and medium stars slowly cool down and stop shining.
sun-----white dwarf star
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Large stars end with a violent explosion called a supernova. After that the material gets crushed much smaller. It no longer shines.
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Multiple Choice
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5. The closest star to Earth is the Sun.
yellow / dwarf star
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Open Ended
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Stars do not really twinkle, they just appear to twinkle when seen from the surface of Earth.
Do stars really twinkle?
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When starlight enters our atmosphere it is affected by winds in the atmosphere and by areas with different temperatures and densities.
Do stars really twinkle?
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Stars are bright, huge balls of gas.
oblate spheroid - (roughly spherical)
Do stars really twinkle?
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Open Ended
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Do stars produce their own light?
Stars make their own light, just like our sun.
sun = star
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Open Ended
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Black hole is a cosmic body of extremely intense gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star.
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The Milky Way gets its name from a Greek myth about the goddess Hera who sprayed milk across the sky while breastfeeding Heracles.
Mythology
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Multiple Choice
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An astronomer is a scientist who focuses primarily on the study of space, which includes the stars, the planets and the galaxies.
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Astronomy is the scientific study of everything in outer space.
Astronomers
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Studying the scientific properties of these objects in space helps us to understand how the universe was made, what else is out there, and how we fit in.
Astronomers
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Astrology is based on the belief that the location of certain stars and planets in the sky can predict the future or describe what a person is like.
*HOROSCOPE
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Claims made by astrology are not based on scientific evidence.
pseudoscience/divination/beliefs
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Open Ended
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In ancient times astronomers saw many patterns in the way stars were arranged in the sky.
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What are constellations?
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Constellation comes from a Latin word that means "set with stars".
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Today, there are 88 officially recognized constellations.
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The Big Dipper is a part of a constellation called URSA MAJOR ,or GREAT BEAR.
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URSA MINOR
"smaller bear"
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ORION
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Orion is a constellation named after a hunter in Greek mythology.
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AQUARIUS
“water carrier” or “cup carrier”
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Aquila
"EAGLE"
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ARIES
"ram
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CANIS MAJOR
"greater dog"
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Cassiopeia
the name of a queen in Greek mythology
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GEMINI
"twins"
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LEO
"lion"
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PICSES
"fish"
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SCORPIUS
"scorpion"
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TAURUS
"bull"
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PICSES
"fish"
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zodiac constellations - astrology
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Long ago, people looked up at the night sky and saw patterns that look like people, animals, or objects.
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Most of the constellation names we know came from the ancient Middle Eastern, Greek, and Roman cultures.
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They identified clusters of stars as gods, goddesses, animals, and objects of their stories.
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Multiple Choice
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Earth travels in an orbit around the sun, so the positions of the constellations in the night sky, as viewed from Earth, change from season to season.
REVOLUTION
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Earth and Space- Patterns in the Sky
pp.304-305
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