PPM

Which of the following concentrations is higher? (ppm= part per million)

• 0.2 ppm

• 2.2 ppm

• 20.2 ppm

• 200 ppm

What is more dangerous LD50 of

• 0.04 ppm

• 1.29 ppm

• 1.04 ppm

• 0.40 ppm

Tags

NGSS.MS-PS1-2

How many more parts per million (ppm) of CO2 are in the atmosphere in 2015 compared to in 1958?

• 320 ppm

• 150 ppm

• 90 ppm

• 50 ppm

Tags

NGSS.MS-ESS3-5

With the drastic rise in CO2 level, what do you predict will happen to temperature?

• Temperature will remain the same.

• Temperature will increase.

• Temperature will decrease.

Tags

NGSS.MS-ESS3-5

The concentration of carbon dioxide in parts per million (ppm) was measured for a closed container in several situations. Which of the following data collected would demonstrate the action of photosynthesis?

• When multiple plants were put in the container, carbon dioxide concentration never got above 1,000 ppm.

• When carbon dioxide concentration went from 800 to 1,000 ppm the temperature in the container went up.

• Plants in the container kept in darkness did not lower the concentration of carbon dioxide below 800 ppm.

• When the container included a plant exposed to light, carbon dioxide concentration went from 800 to 600 ppm.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

When the container included a plant exposed to light, carbon dioxide concentration went from 800 to 600 ppm.

(See attached table)

How could the students use one of these solutions to gather evidence for the action of photosynthesis?

• Use Fehling’s solution with the roots of several different species of plants, after boiling them for several minutes

• Pump the air from a closed container containing a plant through a sample of lime water

• Use Fehling’s solution on plant leaves exposed to light and on plant leaves covered in aluminum foil for a week

• Grind up all parts of a plant, expose them to heat, collect the gas, and use lime water to test it

Tags

NGSS.MS-LS1-6

Which of the following concentrations is higher? (ppm= part per million)

• 0.2 ppm

• 2.2 ppm

• 20.2 ppm

• 200 ppm

What is more dangerous LD50 of

• 0.04 ppm

• 1.29 ppm

• 1.04 ppm

• 0.40 ppm

The concentration of carbon dioxide in parts per million (ppm) was measured for a closed container in several situations. Which of the following data collected would demonstrate the action of photosynthesis?

• When multiple plants were put in the container, carbon dioxide concentration never got above 1,000 ppm.

• When carbon dioxide concentration went from 800 to 1,000 ppm the temperature in the container went up.

• Plants in the container kept in darkness did not lower the concentration of carbon dioxide below 800 ppm.

• When the container included a plant exposed to light, carbon dioxide concentration went from 800 to 600 ppm.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3