Circles, Squares, and Daggers

1
Circles, Squares, and Daggers

• By
• Navine Villalon
• 5th grade student at Zela Davis Elem
• and
• Mr. Paterson
• 5th grade teacher at Zela Davis Elem

2
Vocabulary

• Astronomical observatories
• Archaeoastronomy
• Carbon Dating
• Horizon
• Petroglyphs

3
Astronomical observatories use context clues

• Did you know that Native Americans made
  astronomical observatories long before Europeans
  arrived?
• Some astronomical observatories are located in
  Missouri.
• -places used for observing the sky

4
Archaoastronomy use context clues

• Archaeoastronomy is a very new field that
  combines archeology with astronomy.
• With archaeoastronomy, we are beginning to
  understand how people of the past observed the
  skies.
• - the study of ancient astronomical observations

5
Carbon Dating use context clues

• Scientists use carbon dating to find out a
  materials age.
• The calculations agreed with carbon dating for
  the site.
• Using carbon14 to find out the age of a material.

6
Horizon use context clues

• Bright stars that shine briefly on the horizon
  occur before and after the summer solstice.
• A star appears to not move because its fixed on
  the horizon.
• - a line formed in the distance of the Earth and
  sky.

7
Petroglyphs use context clues

• Scientists believe that cavemen drew petroglyphs
  in caves.
• You can find petroglyphs in the museum.
• - a drawing or word carved into rock.

8
Lets Review

• A line formed in the distance of the Earth and
  sky.__________________
• The study of ancient astronomical
  observations.___________
• Using carbon 14 to find out the age of a
  material.____________
• 
  
• A drawing or word carved into rock._____________
• Places to study astronomy. ________

• Carbon dating
• Petroglyphs
• Archaeoastronomy
• Horizon
• Astronomical observatories

9
Word Knowledge

• gradually directly roughly absolutely
• circle travel spiral pencil capitol
• equinoxes inches cargoes varieties
• social spokes shone Mexico adobe
• The balls speed increased gradually, and it went
  directly through he goal.
• She drew a circle and a spiral on her paper.
• There are many varieties of fish in the ocean.
• The adobe houses in Mexico are made of clay
  bricks that are baked in the sun.