Mid Term Practice

The motion of a body that travels around another body in space is called___________.

• ROTATION

• SPINNING

• REVOLUTION

• REPULSION

The earth rotates every _______ .

• 24 HOURS

• 15 HOURS

• 365 DAYS

• 72 HOURS

What is the elliptical line circling the Sun represent?

• ROTATION

• REVOLUTION

• ORBIT OF THE EARTH

• ORBIT OF THE SUN

What angle is Earth’s axis tilted at?

• 20 DEGREES

• 21.5 DEGREES

• 23 DEGREES

• 23.5 DEGREES

What is deforestation?

• Clearing Earth's forests on a massive scale

• Eating too many vegetables

• Planting trees on cleared land

• Agriculture

What is the leading cause of deforestation?

• diseases

• housing

• agriculture

• paper

What are the effects of deforestation?

• loss of habitat

• increased green house gases

• soil erosion and flooding

• all of the above

What is true about digital signals?

• They are easily distorted or affected by interference

• They take up more space

• They require more information

• They are generally considered more reliable

Which type of signal can be easily corrected to remove noise?

• Analog

• Digital

• Both

• Neither

Numbers in an analog signal can have _____ values.

• any

• only high

• only low

• only set