Site MapHelpFeedbackSection 7.1
Section 7.1
(See related pages)

1
Celestial objects are...
A)planets that cause an eclipse to occur.
B)stars found only in distant galaxies.
C)objects that rotate around Earth.
D)any objects that exist in space.
2
How did ancient Egyptians use the star Sirius to help them in their everyday lives?
A)Its position told them when it was the best time to hunt.
B)Its position helped them to predict in which season an eclipse would occur.
C)Its position helped them to follow the annual migration of birds.
D)Its position helped them to predict the annual flooding of the Nile River.
3
The Earth’s revolution around the Sun takes…
A)seven days.
B)30.5 days.
C)365 days.
D)365.24 days.
4
The time it takes Earth to make one rotation on its axis is…
A)one day.
B)one week.
C)one month.
D)one year.
5
Eratosthenes and Aristarchus hypothesized that Earth is…
A)flat and stationary.
B)spherical
C)square.
D)supported by mountains at four different places.





To learn more about the book this website supports, please visit its Information Center.
(c)2009 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Notice.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


ON Science 9Online Learning Center

Home > Chapter 7 > Section 7.1