According to the chart, which organisms existed 300 million years ago? Which group (A or B) is more likely to…

Question

According to the chart, which organisms existed 300 million years ago? Which group (A or B) is more likely to represent the dinosaurs? Give a reason for your answer to QUESTION 3.1.2.

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I cannot answer questions 3.1.1 to 3.1.5 as the "chart" referred to in these questions is not visible in the provided image. Please provide the chart if you would like these questions answered.

Here are the answers to questions 3.2.1 and 3.2.2 based on the graph:

3.2.1 To find the half-life, we look at the time it takes for the original $^{14}\text{C}$ to decrease to 50%.

Locate 50% on the y-axis (Original $^{14}\text{C}$ in %).
Trace horizontally from 50% to the curve, then vertically down to the x-axis (TIME [x 10 000 years]).
The value on the x-axis is approximately 0.55.
Multiply this value by 10 000 years.
$0.55 \times 10\,000 \text{ years} = 5\,500 \text{ years}$
The half-life of $^{14}\text{C}$ according to the graph is $\boxed{\text{5 500 years}}$ .

3.2.2 To determine the age of the fossil, we find the time corresponding to 4% of the original $^{14}\text{C}$ .
Locate 4% on the y-axis (Original $^{14}\text{C}$ in %).
Trace horizontally from 4% to the curve, then vertically down to the x-axis (TIME [x 10 000 years]).
The value on the x-axis is approximately 2.4.
Multiply this value by 10 000 years.
$2.4 \times 10\,000 \text{ years} = 24\,000 \text{ years}$
The age of the fossil is approximately $\boxed{\text{24 000 years}}$ .

According to the chart, which organisms existed 300 million years ago? Which group (A or B) is more likely to represent the dinosaurs? Give a reason for your answer to QUESTION 3.1.2.

Step-by-step solution

Locate 50% on the y-axis (Original $^{14}\text{C}$ in %).

Trace horizontally from 50% to the curve, then vertically down to the x-axis (TIME [x 10 000 years]).

The value on the x-axis is approximately 0.55.

Multiply this value by 10 000 years.

Locate 4% on the y-axis (Original $^{14}\text{C}$ in %).

Trace horizontally from 4% to the curve, then vertically down to the x-axis (TIME [x 10 000 years]).

The value on the x-axis is approximately 2.4.

Multiply this value by 10 000 years.

Still stuck on this one?

More Biology Questions

According to the chart, which organisms existed 300 million years ago? Which group (A or B) is more likely to represent the dinosaurs? Give a reason for your answer to QUESTION 3.1.2.

Step-by-step solution

Locate 50% on the y-axis (Original 14C^{14}\text{C}14C in %).

Trace horizontally from 50% to the curve, then vertically down to the x-axis (TIME [x 10 000 years]).

The value on the x-axis is approximately 0.55.

Multiply this value by 10 000 years.

Locate 4% on the y-axis (Original 14C^{14}\text{C}14C in %).

Trace horizontally from 4% to the curve, then vertically down to the x-axis (TIME [x 10 000 years]).

The value on the x-axis is approximately 2.4.

Multiply this value by 10 000 years.

Still stuck on this one?

More Biology Questions

Locate 50% on the y-axis (Original $^{14}\text{C}$ in %).

Locate 4% on the y-axis (Original $^{14}\text{C}$ in %).