Properties Of Stars Question Preview (ID: 34636)
FCAT Practice.
TEACHERS: click here for quick copy question ID numbers.
Which statement best describes stars?
a) large planets that are composed mostly of gases
b) celestial bodies made up of gas that give off light
c) faint dots of light that can be seen from Earth’s surface
d) objects that form in the outer parts of the solar system
What characteristic of stars is measured by luminosity?
a) brightness
b) size
c) temperature
d) distance from Earth
Which of the following pairs of terms directly relates to the actual brightness of a star?
a) absolute magnitude and luminosity
b) apparent magnitude and luminosity
c) size and luminosity
d) absolute magnitude and apparent magnitude
Two stars have the same apparent magnitude as seen from Earth’s surface. Star A is 33 ly away. Star B is 346 ly away. Which of the following statements is true?
a) Star B is larger than star A.
b) Star B is more luminous than star A.
c) The stars have the same absolute magnitude.
d) Star A has a smaller absolute magnitude.
Scientists use the light-year to describe the relationships between objects in space. What does a light-year measure?
a) the distance that light can travel in one year
b) the brightness of light that travels through space
c) the number of years it takes light to travel to Earth
d) the time it takes light to travel 1 million km
Distances between objects in space can be enormous. Which of the following distances is the longest?
a) 2.1 ly
b) 950,000 km
c) 9.5 trillion km
d) 1 million ly
A light-year (ly) is the distance that light travels in one year. If a star is 3 ly from Earth, how long does it take light from that star to reach Earth?
a) 3 minutes
b) 3 hours
c) 3 years
d) 3 seconds
Scientists use different units for different types of measurements. A light year is the unit that astronomers use to measure the distance between which objects?
a) distance between a satellite and Earth
b) distances between planets in our solar system
c) distance between the Sun, the moon, and asteroids
d) distances between stars, galaxies, and other structures in space
There are billions of stars in the known universe. None of them seem to be as bright as the Sun. Which statement gives the best reason why the Sun appears to be the brightest star.
a) All stars have the same apparent brightness, but the Sun has more absolute brightness.
b) The Sun is the biggest of all the stars and therefore has the greatest absolute brightness.
c) The Sun is the hottest of all the stars and therefore has the greatest absolute brightness.
d) The Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.
Astronomers have two ways of measuring the brightness of a star, apparent magnitude and absolute brightness, Which statement best explains the difference between apparent magnitude and absolute brightness?
a) Apparent magnitude is a measure of a star’s brightness at a known distance from Earth, and absolute brightness is a measure o
b) Apparent magnitude is a measure of a star’s brightness as seen from Earth and absolute brightness is a measure of the brightn
c) Apparent magnitude is a measure of a star’s size as seen from Earth and absolute brightness is a measure of a star’s size at
d) Apparent magnitude is a measure of a star’s color as seen from Earth and absolute brightness is a measure of the temperature
Which object in our universe has the highest apparent magnitude?
a) Moon
b) Sun
c) The Largest Star in the Universe
d) Jupiter
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 34636 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 34636 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register