Cosmic Microwave Background Radiation Worksheet

Which graph best shows the relationship of the size of the universe to the temperature indicated by the cosmic microwave background radiation?

• A) [Graph A]

• B) [Graph B]

• C) [Graph C]

• D) [Graph D]

Light from distant galaxies most likely shows a

• red shift, indicating that the universe is expanding

• red shift, indicating that the universe is contracting

• blue shift, indicating that the universe is contracting

• blue shift, indicating that the universe is expanding

Which combination of planet masses and distances produces the greatest gravitational force between the planets?

• ⑨ — 200 × 10⁶ km — ⑨

• ⑤ — 200 × 10⁶ km — ⑤

• ⑤ — 100 × 10⁶ km — ⑤

• ⑨ — 100 × 10⁶ km — ⑨

The given diagram of our solar system represents a

• heliocentric model with the Sun near the center

• heliocentric model with Earth near the center

• geocentric model with the Sun near the center

• geocentric model with Earth near the center

The diagram below represents the Moon passing through the darker part of Earth's shadow called the umbra. Letters A and B represent locations on Earth's surface. Which one of the following statements best identifies this event and at which location it would be viewed?

• A) A lunar eclipse is occurring and can be seen from location A.

• B) A lunar eclipse is occurring and can be seen from location B.

• C) A solar eclipse is occurring and can be seen from location B.

• D) A solar eclipse is occurring and can be seen from location A.

At a location in the Northern Hemisphere, a camera was placed outside at night with the lens pointing at a group of stars. The shutter was left open for a few hours, resulting in the photograph of star trails shown below. What is the name of the star in the center of the photograph that did not leave a star trail?

• Sirius

• Betelgeuse

• Polaris

• the Sun

Which bar graph best represents the equatorial diameters of the eight planets of our solar system?

• [Bar graph A]

• [Bar graph B]

• [Bar graph C]

• [Bar graph D]

The evidence shown by the light from these star clusters that indicates that these clusters are moving away from Earth is:

• A blue shift in the light spectrum

• A red shift in the light spectrum

• An increase in brightness

• A decrease in temperature

Use the information given to list Barnard's Star, the Sun, and the universe in order by age from oldest to youngest.

• Universe, Barnard's Star, Sun

• Barnard's Star, Universe, Sun

• Sun, Barnard's Star, Universe

• Barnard's Star, Sun, Universe

What is the estimated age, in years, of Earth and our solar system?

• About 4.6 billion years.

• About 1 billion years.

• About 10 billion years.

• About 500 million years.