The Universe

The Universe Worksheet-1

1. What is a Galaxy?

A. A pair of stars                           B. A distant solar system

C. A huge cluster of stars            D. A huge cluster of planets

2. What is the estimated age of the Universe?

A. Approximately 14 billion years old

B. Approximately 14 hundred years old

C. Approximately 14 years old

D. Approximately 1 thousand years old

The Universe Worksheet-2

1. What is a Light Year?

A. A unit of brightness

B. A unit of time that is equal to the time it takes for light to travel in one year

C. A unit of length that is equal to the distance travelled by light in one year

D. A unit of length that is equal to the distance travelled by sound in one year

2. What does a Radio Telescope do?

A. Collect light and then to have the image magnified

B. Detects radio waves coming from space objects

The Universe Worksheet-3

1. What units of measurement are used more frequently in astronomy?

A. Light Distance and Astronomical Unit (AU)

B. Light Year and Astronomical Unit (AU)

C. Trillion Miles and Space Unit (SU)

D. Big Inches and Large Unit (LU)

2. What is one Astronomical Unit (AU)?

A. A unit of time approximately equal to the time it takes to travel from the Sun to the Moon

B. A unit of time approximately equal to the time it takes to travel from the Earth to the Moon