Telescopes-Hypothesis/theory
What's an hypothesis?
A possible answer to a scientific question
What's another name for light?
Electromagnetic (EM) Radiation
Which light transfers heat?
Infrared
The universe started as a _____ _____ that was very ___ and _____
small point
hot and dense
2 most common elements
Hydrogen and Helium
What's the purpose of a telescope?
To study space/You can see planets, stars, etc that you normally can't see with your naked eye
Finish the line
Light travels in a ________
vaccum
Which light from the Spectrum has the lowest frequency and energy?
Radio waves
Redshift
When objects move away from the observer
Hubble Law - Is the universe expanding or getting smaller?
the universe is expanding
List 3 things that a scientific theory needs
evidence/facts that don't change/the evidence to be tested by several scientists
1. crest-crest
2. highest point on a wave
3. lowest point on a wave
4. a wave's height
1. Wavelength
2. Crest
3. Trough
4. Amplitude
Which light is used for communication?
Microwave
Blueshift
When objects move towards the observer
CMBR definition
the leftover energy from the Big Bang
How does a telescope work?
There are lenses/mirrors that make objects come into view so people can see objects better
Longer/stretched waves have a....
____ wavelength, ______ frequency, ____ energy
long wavelength, low frequency, low energy
Which light causes sunburns?
Ultraviolet
Redshift - Are the waves stretched or compressed?
Stretched
Law of Conservation of Energy
energy can not be ________ or ____________
created or destroyed
Random: The movement energy in the form of waves or particles through space or through a material medium
Radiation
Shorter/compressed waves have a....
____ wavelength, ______ frequency, ____ energy
short wavelength, high frequency, high energy
List the Electromagnetic Spectrum lights in order from longest wavelength to shortest wavelength
Radio waves - Microwave - Infrared - Visible light - Ultraviolet - X-rays - Gamma Rays
Blueshift - Are the waves stretched or compressed?
Compressed
Hubble's Law - the more apart objects are, the ______ they move away from the universe
faster