Transcript Our Universe - EarthSpace Science

Lessons 1-2
Lesson 1: Light and the Universe
Lesson Objectives
Our Universe
Planets
Stars
Solar Systems
Galaxies
Waves
 Waves are a transfer of energy from one point to the
next.
 A photon is a particle of light that travels in a wavelike
pattern at the speed of light,
Features of a Wave
Features of a Wave
Features of a Wave
Features of a Wave
Features of a Wave
Features of a Wave
Features of a Wave
Frequency and Wavelength
Types of Waves
Longitudinal Waves and Transverse Waves
***A medium is any form of matter through which a wave travels***
Overview
Frequency and Wavelength
Measurements
How are Certain Waves Created?
Microwaves are produced when magnetic
and electric fields are applied perpendicular
to each other
Infrared radiations are produced when a
changing electric field creates a changing
magnetic field perpendicular to it
Gamma rays are produced by applying
electric and magnetic fields at right angles
to each other
***Sounds needs a medium to travel though, light does not***
***Light travels the fastest in a vacuum traveling at 300,000 km/sec***
How far away is it
 Light year - the distance light travels in one year.
Although the term may sound like a measure of time,
it is a measure of distance.
The best method to measure the distance to a star is to calculate the variations
in the position of the star due to movement of Earth in its orbit.
1. Go to the “Assessments” tab:
2. Click on the “S1 Our Universe 01; Light and the Universe”
3. Answer all questions and at the bottom check the box, and finally click
“submit”.
Lesson 2: Exploring the Universe
Lesson Objectives
Constellations
 Groups of Stars
 Named after ancient heroes, gods, or other creatures
 Used as a navigation system before we had better
technology
Space Travel Time Line
1951-1959
First orbiting satellite Sputnik launched by
Russians
1970-1979
Exploration with
unmanned space
crafts
1900-1950
Robert Goddard
believe space travel is
possible
1960-1969
Busiest time in
Space Exploration.
First manned
mission landed on
the moon
1990-1999
Continued
exploration with
unmanned space
crafts
1980-1989
First close-up look at
comets
2011-2021
What do you think?
2000-2010
More manned space
travel and
exploration of Mars
Why Travel to Space?
 Discoveries and inventions used for space helped
create products we use in the home.
Let’s take a look
http://www.nasa.gov/externalflash/nasacity/index2.htm
Was Great for the Florida Economy
Telescopes
Uses lenses to
focus the light
Telescopes
Uses mirrors to
focus the light,
which reduces
distortion
I can’t see it
 Certain types of waves of not able to pass through the
atmosphere so the best placement for a telescope when
observing space is space.
1. Go to the “Assessments” tab:
2. Click on the “S1 Our Universe 02: Exploring the Universe”
This assessment can be confusing so please visit www.flvsess.com for an
instructional video on how to complete it.