APES MATH REVIEW

If an incandescent light bulb used for lighting has an efficiency rating of 5%, then for every 1.00 joule of electric energy consumed by the bulb, which of the following is produced?

• 1.05 joules of light energy

• 1.05 joules of heat energy

• 0.95 joules of light energy

• .05 joules of light energy

Tags

NGSS.MS-PS1-4

A sample of radioactive waste has a half-life of 10 years and an activity level of 2 curies (the curie is a measurement of radioactivity). After how many years will the activity level of this sample be 0.25 curie?

• 40 years

• 20 years

• 30 years

• 80 years

Tags

NGSS.HS-PS1-8

If a city with a population 10,000 experiences 100 births, 40 deaths, 10 immigrants, and 30 emigrants in the course of a year, what is its net annual percentage growth rate?

• 0.4%

• 0.8%

• 4.0%

• 8.0%

Tags

NGSS.MS-LS2-1

If a population of a country grows at a rate of approx 5 percent per year, the number of years required for the population to double is closest to

• 5 years

• 10 years

• 15 years

• 30 years

The combustion of one gallon of automobile fuel produces about 5 pounds of carbon (in CO2). Two autos are making a trip of 600 miles. The first auto gets 20 miles per gallon, the second gets 30 miles per gallon. Approximately how much LESS carbon (in CO2) will be produced by the second automobile on this trip?

• 10 lbs carbon

• 20 lbs carbon

• 50 lbs carbon

• 100 lbs carbon

If the annual consumption of petroleum in the US is 23 barrels per capita and there are approximately 450 million Americans, the total annual consumption of petroleum is closest to

• 1 billion barrels

• 10 billion barrels

• 50 million barrels

• 6 billion barrels

Tags

NGSS.MS-ESS3-4

Energy flow in Lake Fremont (kcal/m2/year

Trophic level Energy Consumed Waste Energy GPP NPP

Producers --- 1,500,000 10,000 8,000

Primary Consumers 2,000 1,600 200 180

Secondary Consumers 160 100 40 10

In the community described above, which of the following represents the respiratory energy (kcal/m2/year) used by autotrophs?

• 10

• 200

• 2,000

• 10,000

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

In the earth's crust the temp increases about 2 degrees C for each 100m in depth below the surface. If the surface temp is 30 degrees C, a temp of 100 degrees C can be reached at a depth of

• 7 km

• 35 km

• 3.5 km

• 70 km

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Compared to a solution that has a pH of 8, a solution that has a pH of 5 is

• 100 times more acidic

• 1000 times more acidic

• 10,000 more acidic

• 3 times as acidic

Sea level is rising by about 2.5 mm per year. At this rate, how much time would it take to increase by 0.5m?

• 100 years

• 150 years

• 200 years

• 300 years