electricity production by energy source
other
0.2%
petroleum
2.2%
natural gas
8.5%
hydroelectric
10.7%
coal
56.4%
nuclear
21.9%
use the above pie chart to answer the following questions.
37. which of the energy sources shown are fossil fuels?
a. hydroelectric
b. natural gas and hydroelectric
c. natural gas, nuclear, hydroelectric
d. coal, natural gas, petroleum
38. which energy sources shown are renewable sources of energy?
a. coal, natural gas, petroleum
b. hydroelectric, nuclear
c. hydroelectric, natural gas
d. hydroelectric
39. which energy source contributes to the greatest supply of electricity?
a. nuclear
b. hydroelectric
c. coal
d. natural gas
40. what percentage of electricity produced is made from nonrenewable sources of energy?
a. 76.1%
b. 89.0%
c. 89.2%
d. 32.8%

Question

Accepted Answer

### Question 37
# Brief Explanations:
Fossil fuels are formed from the remains of ancient organisms and include coal, natural gas, and petroleum (oil). Hydroelectric is from water (renewable), nuclear is from nuclear reactions (not fossil), so only D has coal, natural gas, petroleum.
# Answer:
D. coal, natural gas, petroleum

### Question 38
# Brief Explanations:
Renewable energy is replenished naturally. Hydroelectric (water) is renewable. Coal, natural gas, petroleum are fossil (non - renewable), nuclear is non - renewable (fuel is finite). So only hydroelectric is renewable among options, D is correct.
# Answer:
D. hydroelectric

### Question 39
# Brief Explanations:
Check the percentages: Coal is 56.4%, Nuclear 21.9%, Hydroelectric 10.7%, Natural gas 8.5%. Coal has the highest percentage, so C is correct.
# Answer:
C. coal

### Question 40
# Explanation:
## Step 1: Identify non - renewable sources
Non - renewable sources here are coal (56.4%), natural gas (8.5%), petroleum (2.2%), and nuclear (21.9%)? Wait, no: fossil fuels (coal, natural gas, petroleum) and nuclear? Wait, actually, non - renewable sources in the chart: coal (56.4%), natural gas (8.5%), petroleum (2.2%), nuclear (21.9%)? Wait, no, hydroelectric is renewable (10.7%), other is 0.2%. Wait, non - renewable: coal + natural gas + petroleum + nuclear? Wait, no, nuclear is non - renewable? Wait, the problem: non - renewable sources. Let's sum coal (56.4%) + natural gas (8.5%) + petroleum (2.2%) + nuclear (21.9%)? Wait, no, wait the pie chart: coal 56.4, nuclear 21.9, natural gas 8.5, petroleum 2.2, hydroelectric 10.7, other 0.2. Non - renewable: coal, natural gas, petroleum, nuclear. Wait, but let's check the options. Wait, maybe the non - renewable sources are coal, natural gas, petroleum, and nuclear? Wait, no, maybe the question considers fossil fuels and nuclear as non - renewable. Let's sum their percentages: 56.4 (coal) + 8.5 (natural gas) + 2.2 (petroleum) + 21.9 (nuclear) = 56.4+8.5 = 64.9; 64.9+2.2 = 67.1; 67.1+21.9 = 89.0? Wait, but the options have 89.0% (option B) or 89.2% (option C). Wait, maybe I made a mistake. Wait, hydroelectric is renewable (10.7%), other is 0.2%. So total non - renewable: 100 - (10.7 + 0.2)=89.1? Wait, 10.7+0.2 = 10.9, 100 - 10.9 = 89.1. But the options: B is 89.0%, C is 89.2%. Wait, maybe the non - renewable sources are coal, natural gas, petroleum, and nuclear? Wait, coal (56.4) + natural gas (8.5) + petroleum (2.2) + nuclear (21.9) = 56.4+8.5 = 64.9; 64.9+2.2 = 67.1; 67.1+21.9 = 89.0. So option B is 89.0%, which is close. Wait, maybe the question considers nuclear as non - renewable. So sum coal (56.4) + natural gas (8.5) + petroleum (2.2) + nuclear (21.9) = 56.4+8.5 = 64.9; 64.9+2.2 = 67.1; 67.1+21.9 = 89.0. So the answer is B? Wait, but let's check again. Wait, hydroelectric is 10.7, other 0.2. 100 - (10.7 + 0.2)=89.1, which is close to 89.0 (option B) or 89.2 (option C). Maybe a rounding error. Let's sum the non - renewable: coal (56.4) + natural gas (8.5) + petroleum (2.2) + nuclear (21.9) = 56.4+8.5 = 64.9; 64.9+2.2 = 67.1; 67.1+21.9 = 89.0. So option B is 89.0%, which matches.
## Step 1: Sum the percentages of non - renewable sources
Non - renewable sources: coal (56.4%), natural gas (8.5%), petroleum (2.2%), nuclear (21.9%).
Sum = $56.4 + 8.5+2.2 + 21.9$
## Step 2: Calculate the sum
$56.4+8.5 = 64.9$; $64.9+2.2 = 67.1$; $67.1+21.9 = 89.0$
# Answer:
B. 89.0%

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Question 37

Answer:

Question 38