Question 1 of 10
On a topographic map, contour lines that are spaced very close together indicate:
Aa steep slope
Bperfectly flat land
Ca body of water
Da gentle slope
Explanation
Closely spaced contour lines mean elevation changes rapidly over a short distance — a steep slope.
Question 2 of 10
As altitude increases within the lower atmosphere, air pressure generally:
Adoubles
Bincreases
Cdecreases
Dstays constant
Explanation
There is less air above you at higher altitudes, so air pressure decreases.
Question 3 of 10
As the temperature of air increases, the maximum amount of water vapor the air can hold:
Aincreases
Bstays the same
Cdecreases
Ddrops to zero
Explanation
Warmer air can hold more water vapor before becoming saturated.
Question 4 of 10
A barometer is an instrument used to measure:
Aair temperature
Bair pressure
Cwind speed
Drelative humidity
Explanation
A barometer measures atmospheric (air) pressure.
Question 5 of 10
The shape of the orbits of the planets around the Sun is best described as:
Aa straight line
Ba perfect circle
Can ellipse
Da square
Explanation
Planetary orbits are ellipses (slightly elongated circles), with the Sun at one focus.
Question 6 of 10
About how long does it take Earth to ROTATE once on its axis?
A365 days
Babout one month
C24 hours
D12 hours
Explanation
One rotation of Earth on its axis takes about 24 hours, producing day and night.
Question 7 of 10
The topographic map shows four locations labeled A, B, C, and D. At which location is the land surface STEEPEST? 
AD
BA
CC
DB
Explanation
Contour lines bunched close together show a steep slope (large elevation change over a short horizontal distance). They are closest at point A.
Question 8 of 10
Approximately how long does one complete revolution of Earth around the Sun take?
A27.3 days
B30 days
C365¼ days (one year)
D24 hours
Explanation
One revolution (orbit) of Earth around the Sun takes about 365¼ days — one year.
Question 9 of 10
Using the labeled contour lines on the map, what is the contour interval? 
A80 feet
B10 feet
C40 feet
D20 feet
Explanation
The contour interval is the elevation change between adjacent lines: 20 − 0 = 20.
Question 10 of 10
The apparent daily motion of the Sun across the sky (rising in the east and setting in the west) is caused by:
AEarth's rotation on its axis
BEarth's revolution around the Sun
Cthe Sun orbiting Earth
Dthe gravitational pull of the Moon
Explanation
Earth rotates west-to-east on its axis, making the Sun appear to move east-to-west each day.