The length of a football field is 100 yards. When you compare geologic time (4.6 billion years) to
the length of a football field, you will find that each yard on the field will equal 46 million years,
and each 10-yard section will equal 460 million years. Use this information to complete the
activity below.
Create a digital model of a football field. Starting at the left and moving forward in time, label the
10-yard lines in years. Using different colors, draw a horizontal line to mark the beginning and
end of each of the following periods and eras [note that the years have been rounded up for this
activity]:
• Cenozoic era (65 MYA to present)
• Cretaceous period (146‒65 MYA)
• Jurassic period (208‒146 MYA)
• Triassic period (245‒208 MYA)
• Paleozoic era (570‒245 MYA)
• Proterozoic era (2,500‒570 MYA)
• Archean era (3,800‒2,500 MYA)
• Hadeanera(4,600‒3,800MYA)
For example, to calculate where to mark the Cenozoic era, calculate:
⋅ ≈ 1 yard 65 million years 1.4 yards 46 million years
The Cenozoic era should be marked approximately 1.4 yards from the right end of the football field.
Review your model with your Learning Coach, and submit to your teacher for grading| Please Help!!!
I can tell that you, like me, are a connections academy student. I am struggling with the same issue, but for some help, I would recommend that you go to Message Boards>Portfolios>Telling Earth's Story Portfolio. There are then two options for help (I recommend the non-alternative one). Hope this helps!
i cant possibly help i mean ill try some research and it will come in....approximately 2598 days(lol.) jk 10 days hehehehhehehehehehehe.
No help this place sucks what a wast of time
What is the answer???!!!!!!
@ddd why did you just copy and paste what Brosive said?
So like no help??
To create a digital model of a football field and label the 10-yard lines in years, you will need to apply the conversion factor provided in the question: each yard on the field equals 46 million years. Here's how you can calculate the markings for each period and era:
1. Start by dividing the length of the football field (100 yards) by the conversion factor (46 million years) to find out how many million years each yard represents:
- 100 yards / 46 million years = 2.17 million years per yard
2. Now, you can calculate the markings for each period and era:
- Cenozoic era (65 MYA to present):
- Calculate the number of yards for 65 million years: 65 million years / 2.17 million years per yard = 29.95 yards
- Mark the beginning of the Cenozoic era approximately 29.95 yards from the left end of the football field.
- Cretaceous period (146‒65 MYA):
- Calculate the number of yards for 146 million years - 65 million years = 81 million years: 81 million years / 2.17 million years per yard = 37.33 yards
- Mark the beginning of the Cretaceous period approximately 37.33 yards from the left end of the football field.
- Mark the end of the Cretaceous period approximately 65 million years / 2.17 million years per yard = 29.95 yards from the left end of the football field.
- Jurassic period (208‒146 MYA):
- Calculate the number of yards for 208 million years - 146 million years = 62 million years: 62 million years / 2.17 million years per yard = 28.61 yards
- Mark the beginning of the Jurassic period approximately 28.61 yards from the left end of the football field.
- Mark the end of the Jurassic period approximately 146 million years / 2.17 million years per yard = 67.28 yards from the left end of the football field.
- Triassic period (245‒208 MYA):
- Calculate the number of yards for 245 million years - 208 million years = 37 million years: 37 million years / 2.17 million years per yard = 17.05 yards
- Mark the beginning of the Triassic period approximately 17.05 yards from the left end of the football field.
- Mark the end of the Triassic period approximately 208 million years / 2.17 million years per yard = 95.85 yards from the left end of the football field.
- Paleozoic era (570‒245 MYA):
- Calculate the number of yards for 570 million years - 245 million years = 325 million years: 325 million years / 2.17 million years per yard = 149.77 yards
- Mark the beginning of the Paleozoic era approximately 149.77 yards from the left end of the football field.
- Mark the end of the Paleozoic era approximately 245 million years / 2.17 million years per yard = 112.86 yards from the left end of the football field.
- Proterozoic era (2,500‒570 MYA):
- Calculate the number of yards for 2,500 million years - 570 million years = 1,930 million years: 1,930 million years / 2.17 million years per yard = 890.08 yards
- Mark the beginning of the Proterozoic era approximately 890.08 yards from the left end of the football field.
- Mark the end of the Proterozoic era approximately 570 million years / 2.17 million years per yard = 262.69 yards from the left end of the football field.
- Archean era (3,800‒2,500 MYA):
- Calculate the number of yards for 3,800 million years - 2,500 million years = 1,300 million years: 1,300 million years / 2.17 million years per yard = 598.17 yards
- Mark the beginning of the Archean era approximately 598.17 yards from the left end of the football field.
- Mark the end of the Archean era approximately 2,500 million years / 2.17 million years per yard = 1,152.07 yards from the left end of the football field.
- Hadean era (4,600‒3,800 MYA):
- Calculate the number of yards for 4,600 million years - 3,800 million years = 800 million years: 800 million years / 2.17 million years per yard = 368.64 yards
- Mark the beginning of the Hadean era approximately 368.64 yards from the left end of the football field.
- Mark the end of the Hadean era approximately 3,800 million years / 2.17 million years per yard = 1,752.07 yards from the left end of the football field.
3. Using different colors, draw horizontal lines to mark the beginning and end of each period and era based on the calculated yard markings.
Remember to review your model with your Learning Coach and submit it to your teacher for grading.
im from connections, and these sights barely help, and just make me fail
The length of a football field is 100 yards. When you compare geologic time (4.6 billion years) to
the length of a football field, you will find that each yard on the field will equal 46 million years,
and each 10-yard section will equal 460 million years. Use this information to complete the
activity below.
Create a digital model of a football field. Starting at the left and moving forward in time, label the
10-yard lines in years. Using different colors, draw a horizontal line to mark the beginning and
end of each of the following periods and eras [note that the years have been rounded up for this
activity]:
• Cenozoic era (65 MYA to present)
• Cretaceous period (146‒65 MYA)
• Jurassic period (208‒146 MYA)
• Triassic period (245‒208 MYA)
• Paleozoic era (570‒245 MYA)
• Proterozoic era (2,500‒570 MYA)
• Archean era (3,800‒2,500 MYA)
• Hadeanera(4,600‒3,800MYA)
For example, to calculate where to mark the Cenozoic era, calculate:
⋅ ≈ 1 yard 65 million years 1.4 yards 46 million years
The Cenozoic era should be marked approximately 1.4 yards from the right end of the football field.
Review your model with your Learning Coach, and submit to your teacher for grading| Please Help!!!