Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
Which electromagnetic wavelengths can the human eye detect?
|
the visible spectrum of colors
|
|
|
What is plasma?
|
the super-heated ionized state of matter that does not have solid, liquid or gas properties
|
|
|
What are granules?
|
Seething convective cells that divide up the sun's surface
|
|
|
What are solar flares?
|
Severe storms on the sun that give off x-rays adn uv rays
|
|
|
What are spicules?
|
Pointed jets extending from the chromosphere into the corona
|
|
|
Which has a much higher temperature, the corona or the chromosphere?
|
the corona is much hotter
|
|
|
What is the sun composed of?
|
Mostly of hydrogen and helium
|
|
|
What is a coronagraph?
|
An instrument used to produce an artificial eclipse
|
|
|
What are sunspots?
|
Small dark areas on the surface of the sun
|
|
|
What are neutrinos?
|
Tiny particles of energy that travel at the speed of light
|
|
|
What is a spectroscope?
|
An instrument used to identify chemical elements in light
|
|
|
The visible surface of the sun is the _____________.
|
photosphere
|
|
|
What happens in the core of the sun?
|
the zone of the interior where most of the thermonuclear reactions take place
|
|
|
Disturbances in the corona that rise and descend in loops or jets are called________.
|
Prominences
|
|
|
Which end of the ROYGBIV spectrum is the coolest?
|
Red end
|
|
|
Which wavelengths are shorter, gamma rays or infrared?
|
gamma rays
|
|
|
What are the two parts of sunspots?
|
penumbra and the umbra
|
|
|
What is thought to be the causes of sunspots?
|
Sun's magnetic field
|
|
|
What is a photovoltaic cell?
|
The PV cell is capable of converting solar energy into electricity.
|
|
|
What are the two parts of the sun's atmosphere?
|
a thin chromosphere and a very extensive corona
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
What is ultraviolet radiation?
|
A type of energy the sun gives off that we cannot see and causes sunburns.
|
|
|
What layer of the atmosphere protects us from harmful UV radiation?
|
ozone layer in the stratosphere
|
|
|
When are you more likely to get a sunburn during the day?
|
the hours of 10:00am to 4:00pm
|
|
|
What does the ozone do to protect us?
|
by a complex chemical reaction as the UV is absorbed by the ozone layer
|
|
|
What else can we do to prevent our skin from sunburn too much exposure?
|
wear a sunscreen of at least SPF of 15, stay indoors or in the shade during the hot part of day, wear protective clothing, wear hats and sunglasses
|
