Welcome Astronomy

Students

Mr. Goodyear

Today’s Objectives:

S.W.B.A.T.

Help teacher fill in seating chart with

student picture/name and class attendance.

Review classroom routines and expectations

Complete student information science info. sheet

Place proper order of planets from the sun

Match planet symbols to planet names

Become familiar with Astronomy text

Activity:

Students use seating chart place

picture and name into proper place on chart. (teacher takes roll)

Students will fill out student information sheet handout

Write out notes on Planet symbols in proper order from the sun (notes)

Complete textbook exploration for homework

Astronomy

# _____

Introduction notes

(general information)

Planet/Solar System order Symbol

Sun – center ☉

1. Mercury – messenger

2. Venus – love& beauty

3. Earth – bounty – terra ⊕

Moon ☽

4. Mars – war

Asteroids Ceres

5. Jupiter – king

6. Saturn – queen/ringed planet

7. Uranus – harvest or ♅ for Herschel

8. Neptune – sea ♆

Pluto – underworld/cold ♇

Video clip Show

Science: from the Latin scientia, meaning "knowledge")

Science refers to a system of acquiring knowledge. This system uses observation and experimentation to describe and explain natural phenomena. The term science also refers to the organized body of knowledge people have gained using that system.

Cosmic scale/distance/scientific notation

(power of ten)

Universe- the totality of all space, time, matter, and energy

(Everything)

Astronomy – branch of science dedicated to the study of everything in the Universe that lies above Earth’s atmosphere.

Astrology – the study of the apparent influence of celestial objects on the affairs of human life and events.

General measurement to know

Units of length:

Angstrom (Å) = .000,000,000,1 m

Nanometer (nm) .000,000,001 m

Micro/micron (μm) (μg) .000,001 m

Milli (m) .001 m

Centi (c) .01 m

Kilo (k) 1000m

All above are too small to measure distance in space

Distance between the Earth and sun = 93 million miles

93, 000,000 miles or 150 million km 150,000,000 km

Astronomical Unit – A.U. average distance between Earth and the Sun.

it takes light 8 minutes to travel this distance

an A.U. is used to measure distances between objects in the solar system (Kepler’s laws)

What is the speed of light?

186,000 mps or 300,000 km/s

X 365 ( ) x 24 ( ) x 60 ( ) x 60 ( ) =

= 6,000,000,000,000 miles or 6 trillion miles = 9.5 trillion km

Which is a unit of distance called a light year – distance light travels in one year.

2. Light Year – the distance that light, moving at a constant speed of 300,000 km/sec. travels in one year.

Parsec – the distance to an object that exhibits 1 sec. or heliocentric (sun) parallax.

1 parsec = 3.26 l.y. – it is based on size of Earth’s orbit and angles

Parallax – the apparent motion of an object due to motion of the observer. Using trigonometry and geometry distance can be calculated.

Equation- D(parsecs) = 1/p (parallax angle) D = 1/p

p – parallax angles are measured in sec. or arc.

Angular measurements

Circle = 360º

1 degree = 60 arc minutes 60’

1 minute = 60 arc seconds 60”

Units of mass

Ounces, pounds, tons, gram, kilogram

Time

Seconds (s), Minutes (m), Hour (hr), Day (d), Year (y)

More info. use appendix and data chart inside astronomy text