What are the two parts of a shadow during an eclipse?
a. total and partial
b. apogee and perigee
c. sidereal and synodic
d. waxing and waning
e. umbra and penumbra
e
You might also like to view...
What causes stars to twinkle?
A) Stars constantly vary in brightness as they expand and contract. B) Interstellar gas along the line of sight to the star absorbs different amounts of radiation. C) The human eye has difficulty seeing faint objects. D) Moving gases in Earth's atmosphere randomly bend light rays from stars.
Equations are used to
A. All of the above B. describe how quantities change together C. define a concept D. describe a property
When a ball increases in speed by the same amount each second, its acceleration
A) also increases each second. B) decreases each second. C) is constant. D) varies.
The hottest (O and B type) stars are usually binary stars, while the coolest (M type) stars are usually single stars.
Answer the following statement true (T) or false (F)