grade 6 test 7 chap 4.1-4.4
Terms
undefined, object
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- What is the study of outer space?
- astronomy
- Name the dark patches on the sun's photosphere.
- sunspots
- a high-speed stream of particles that travels outward from holes in the sun's corona
- solar wind
- What part of the sun is visible only during a solar eclipse?
- chromosphere
- Name the three basic types of galaxy shapes.
- spiral, elliptical, irregular
- stars that outline a picture in the sky
- constellation
- familiar shape within the constellation Ursa Major which contains the pointer stars
- Big Dipper
- What is the hottest region of the sun?
- core
- streams of gas erupting from the chromosphere and retuning in looplike fashion
- solar prominence
- spiral arms attached to a straight bar that runs through a galaxy
- barred spirals
- What is the force that resists motion called?
- friction
- an area that contains no air
- vacuum
- large clouds of gas and dust floating aroung in space
- nebulae
- Name the brightest star in the night sky.
- Sirius
- Which star is called the pole star?
- Polaris
- What is the closest star to the earth?
- the sun
- Name the brightest star in the constellation Leo.
- Regulus
- What is the brigthtest star in the constellation Perseus?
- Algol
- Whatimaginary line stretches from pole to pole?
- axis of rotation
- What is a galaxy?
- a star system containing millions to billions of stars
- Name the cluster with about 40 galaxies in which we find Earth.
- the Milky Way
- How far is the sun from earth?
- 93 million miles
- hottest region of the sun's atmosphere
- corona
- What is a pair of stars that travel together and rotate around each other as the moon does the earth?
- binary star
- What do you call the actual explosion of a star?
- supernova
- What is the part of the sun's atmosphere closest to its surface?
- chromosphere
- Be able to label the following constellations from a diagram:
-
Draco, Cassiopeia,
Cygnus, Southern Cross, Andromeda - Be able to discuss at least three things that make space different from the Earth's atmosphere.
- no air; extremes of temperature; no air friction; weightlessness; mostly black; see text for more detail
- Be able to discuss the difference between apparent magnitude and absolute magnitude.
- see text p.