1Daily Warm-Up Exercises 1

Day 27

What do numeric time scales show?Numeric time scales use numbers to show how many years ago different things happened.

Proportional time scales show how different parts of Earth’s history compare to the whole.

What do proportional time scales show?

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Personal Time Line(Part 2)

Investigation 6

It's About Time

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• Geologists and astronomers have determined that Earth came into existence about 4.5 billion years ago

• That's the same as 4,500,000,000 years ago.

Age of Earth

Time lines• Proportional time scales show how different parts of

Earth’s history compare to the whole of Earth’s history.

• Numerical time lines show the number of mya’s that events occurred.

• Time lines start with today and work backward.• The Earth is 4.5 billion years old.• Human’s are very RECENT to Earth's history. • Earth history is divided into Era’s and further into

periods.

Daily Warm-Up Exercises 4

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• You will now complete a personal history, make a timeline and answer questions about timelines.

• Complete page 45 with info about YOUR life.

• You will answer the questions from page 46 and follow the directions. You will make your timeline on the back of page 49. FOLLOW the DIRECTIONS!

• Complete page 49.

Activity