Astronomy I
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Geocentrism | disproved theory that the Sun and other planets revolved around the Sun; proposed by Ptolemy
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| Heliocentrism | theory that the Earth and other planets revolve around the Sun; proposed by Copernicus
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| Elliptical | Planets orbit in this shape; Kepler describes this shape in his laws of planetary motion
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| Galileo | first astronomer to use telescopes to explore space; discovered moons, sunspots, etc.
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| Newton | discovered gravity; helped astronomers understand the reason planets orbit and move
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| Lunar eclipse | When the moon passes through the Earth's shadow; creates a red moon (only can occur during a FULL moon)
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| Solar eclipse | When the Earth passes through the moon's shadow; only occurs during a NEW moon
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| Waning | moon phase losing sunlight; moon will be lit on the LEFT
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| Waxing | moon phase gaining sunlight; moon will be lit on the RIGHT
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| Moon phase | sunlight portion of the Moon which changes as the moon revolves and rotates
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| Reflecting telescope | telescope which uses mirrors to reflect light and form an image
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| Refracting telescope | telescope which uses lenses to form images
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| Artificial satellites | any man-made object orbiting the Earth and other planets (aid in GPS, radios, television, etc)
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| Gravity | physical force and attraction between two objects in space; depends on the MASS of the objects and the DISTANCE between the objects
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| Inertia | objects in motion, stay in motion. objects at rest, stay at rest.
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| What two forces create an orbit? | Inertia and gravity
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| Space probes | uncrewed vehicle that carries scientific instruments into space to collect scientific data
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| Big Bang theory | the theory that states the universe began with a giant explosion 13.7 billion years ago
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| How is the universe organized? | Into galaxies, which are clusters of millions of stars. Each galaxy has planetary systems, like solar systems. Each of those have planets. "Everything is a part of something bigger."
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| Cosmic background radiation | radiation coming from all directions in space; believed to be leftover radiation from the Big Bang theory
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| What are the moon phases IN ORDER, starting with the full moon? | Full moon, waning gibbous, third quarter, waning crescent, new moon, waxing crescent, first quarter, waxing gibbous
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| What causes the seasons? | The tilt of the Earth
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| Hubble space telescope | produces very clear images of objects in deep space
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| Rotation | body turning on its axis
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| Revolution | the motion of a body that travels around another body in space; one complete orbit around a body
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| Orbit | the path that a body follows as it travels around another body in space
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| Day | time required for Earth to rotate once on its axis
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| Year | time required for Earth to revolve around the Earth
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| Month | a division of the year based on the orbit of the moon around the Earth
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Mrs. Corey
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