Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component(s) and energy flows in and out of the system are known. [Clarification Statement: Emphasis is on explaining the meaning of mathematical expressions for energy, work, and power used in the model.] [Assessment Boundary: Assessment is limited to basic algebraic expressions or computations; to systems of two or three components; and to work, power, thermal energy, kinetic energy, potential energy, electrical energy and/or the energies in gravitational, magnetic, or electric fields.]
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Q 1/20
Score 0
1. What is the approximate size of PM 2.5 particles?
30
Less than 25 micrometers
Less than 0.25 micrometers
Less than 250 micrometers
Less than 2.5 micrometers
Q 2/20
Score 0
2. If PM 2.5 pollution caused 4 million deaths in 2019, representing 62% of all air pollution fatalities, what was the approximate total number of air pollution fatalities in 2019?
30
5 million
2.48 million
4.62 million
6.45 million
20 questions
Q.
1. What is the approximate size of PM 2.5 particles?
1
30 sec
HS-PS3-1
Q.
2. If PM 2.5 pollution caused 4 million deaths in 2019, representing 62% of all air pollution fatalities, what was the approximate total number of air pollution fatalities in 2019?
2
30 sec
Q.
3. In Delhi, road dust contributes 38% to PM 2.5, and vehicles contribute 20%. If the total PM 2.5 level is 100 micrograms/m³, what is the combined contribution in micrograms/m³ from road dust and vehicles?
3
30 sec
Q.
4. The PM 2.5 level in Laor is 97.4 micrograms/m³, which is 20 times the safe limit. What is the safe limit?
4
30 sec
Q.
5. If a 10 microgram/m³ increase in PM 2.5 boosts death rates by 7%, what is the expected increase in death rates for a 15 microgram/m³ increase?
5
30 sec
Q.
6. In California, PM 2.5 is responsible for 6,700 asthma-related ER visits yearly. If California’s population is 40 million, what is the rate of asthma ER visits per 100,000 people?
6
30 sec
Q.
7. Globally, PM 2.5 causes 4.14 million early deaths yearly, with 5,400 in California. What percentage of global PM 2.5 deaths occur in California?
7
30 sec
Q.
8. If normal visibility is 10 km, and PM 2.5 reduces visibility by 70%, what is the visibility in heavy PM 2.5 conditions?
8
30 sec
Q.
9. If a farm produces 200 tons of crops normally, and PM 2.5 reduces yields by 5 to 10%, what is the range of potential loss in tons?
9
30 sec
Q.
10. Beijing reduced its PM 2.5 level by 40%. If the new level is 60 micrograms/m³, what was the original level?
10
30 sec
Q.
11. If a city’s PM 2.5 level is 50 micrograms/m³, and the safe limit is 5 micrograms/m³, how many times above the safe limit is the current level?
11
30 sec
Q.
12. Given that a 10 microgram/m³ increase in PM 2.5 boosts death rates by 7%, if a city’s PM 2.5 level is 40 micrograms/m³ above the safe limit, what is the expected increase in death rates compared to the safe level?
12
30 sec
Q.
13. If exposure to PM 2.5 doubles the asthma risk in children, and the baseline risk without exposure is 5%, what is the risk with exposure?
13
30 sec
Q.
14. Which of the following best describes how PM 2.5 causes health issues?
14
30 sec
Q.
15. Which source is NOT mentioned as contributing to PM 2.5 in the transcript?
15
30 sec
Q.
16. The Taj Mahal is cited as an example of:
16
30 sec
Q.
17. Beijing’s PM 2.5 reduction was achieved through:
17
30 sec
Q.
18. If the PM 2.5 level in a city decreases from 80 micrograms/m³ to 60 micrograms/m³, what is the percentage reduction?
18
30 sec
Q.
19. If the safe limit for PM 2.5 is 5 micrograms/m³, and a city’s level is 25 micrograms/m³, how many times above the safe limit is it?
19
30 sec
Q.
20. If the global average PM 2.5 level is 10 micrograms/m³, and the safe limit is 5 micrograms/m³, what percentage reduction is needed to reach the safe limit?
