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the different shapes of the moon as seen from Earth
What are phases of the moon?
the movement of one object around another object
What is revolution?
the sun, the planets and their moons, and other objects that orbit the sun
What is the solar system?
the dark part of a shadow
What is umbra?
scientists who study Space
What are astronomers?
the lighter part of a shadow
What is penumbra?
the path of an object in space around another object
What is orbit?
occurs when Earth is directly between the sun and the moon and Earth blocks the sun's light
What is a lunar eclipse?
the regular rise and fall of ocean waters
What are tides?
a large, bowl-shaped hole with a rim on the surface of a moon or planet, caused by an impact
What is a crater?
an imaginary line extending through Earth from the North Pole to the South Pole around which Earth rotates
What is axis?
the dark spots on the sun; they are regions of cooler temperature
What are sunspots?
a group of stars in the sky that make a picture
What is a constellation?
a frozen chunk of ice and dust that orbits the sun
What is a comet?
occurs when the moon is between Earth and the sun; the moon blocks the sun's light, forming a shadow on Earth
What is a solar eclipse?
a small rocky object orbiting the sun; most asteroids are found between the orbits of Mars and Jupiter
What is an asteroid?
the streak of light in the night sky that results from a meteoroid entering Earth's atmosphere; a shooting star
What is a meteor?
the number of planets in our Solar System
What is eight?
an automated spacecraft that is sent out into space and does not orbit planets or other objects
What is a space probe?
a meteoroid that does not completely burn up in the atmosphere and lands on Earth's surface
What is a meteorite?
True or false: people in ancient civilizations used the positions of the sun, moon and stars to tell time, plant crops, and plan festivals
What is true?
one of the most recognized star patterns; its name in Latin means “greater bear” or “she bear.”
What is the Big Dipper?
True or false: Earth's tilt and movement around the sun causes the change of seasons.
What is true?
the natural satellite of the earth, which is visible mainly at night, by reflected light from the sun.
What is the moon?
the star around which the Earth orbits
What is the Sun?