Why study physics?How does the universe
work?
Chatfield Senior HighPhysics (Mr. Boyle) PPT 1-1
Why Study Physics? (adapted from AAPT) 1. Colleges like you taking challenging
classes. 2. Physics can answer questions about the
world no other discipline can. 3.High school Physics provides scaffolding for
college level work. 4. Physics is the basis for all technological
advances.
“How large is the universe?” writing assignment
Go outside after sunset (or before sunrise!) and lie on the ground. Ponder the size of the universe and your place in it.
After you are finished, write a paragraph that (1) Describes your observations(2) Offers your attempt at answering how large the universe is your place in it
Goals (1) To appreciate how
to think like a physicist
(2) To review concepts of astronomy
(3) To provide a framework for studying physics concepts
The “ancients” (Constellation Names)
The Sky Tonight
Observed Motions
(1) Length of day and direction the sun appears to be above the horizon
(2) Phases of the moon
(3) Motion of the planets with respect to the stars
(4) Comets and eclipses
The ancients (Stonehenge)
The ancients (Stonehenge)
Mesa Verde (Anasazi Indians)
Machu Picchu (Mayans)
The Hitching Post of the Sun
Eclipse (Lunar)
Eclipses (Solar)
Comet (Hale-Bopp)(1997)
Phases of the Moon
Moon Landing (1969)
Observed Motion of Mars
Mercury
Venus
Mars
Voyager I & II (1979)
Jupiter (1979)
Saturn (1980)
Saturn (1980)
Uranus (1986)
Neptune (1989)
Pluto- Charon (The proto-planet)
“How large is the universe?” writing assignment
Go outside after sunset (or before sunrise!) and lie on the ground. Ponder the size of the universe and your place in it.
After you are finished, write a paragraph that (1) Describes your observations(2) Offers your attempt at answering how large the universe is your place in it
If the Sun is the size of a recreational ball
21 cm diameter compared to 1.39 X 1011 m
Planets Would Be…
Mercury 8.75 m from the Sun Venus 16.3 m from the Sun Earth 22.5 m from the Sun Mars 34.5 m from the Sun Jupiter 118 m from the Sun Saturn 216 m from the Sun Uranus 433 m from the Sun Neptune 679 m from the Sun Pluto892 m from the Sun
Nearest Star Would Be…
Alpha-Centauri is 4 light years away.In this model it would be in Honolulu!
5727 km or 3579 mi.
Milky Way Galaxy
It is 100000 light-years across and 1000 light-years thick
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