Stars
What is a nebula?
A large cloud of gas and dust containing an immense volume of material
Name 2 of the 4 galaxy shapes.
Spiral, elliptical, irregular, quasar.
Name an element that is REQUIRED for life.
CARBON, HYDROGEN, NITROGEN, OXYGEN, PHOSPHOROUS, SULFUR
What is it called when farmers don't use machines like tractors?
What is a resource that we can use over and over again?
Renewable resource.
When a star begins to run out of fuel, its core shrinks and its outer portion expands. They begon red giants. Then the otwer parts drift out into space forming a cloud of gas called a planetary nebula. What do we call the glowing core of a star that is cooling off?
white dwarf
Describe how particles change when they transition from gas to liquid to solid.
Bouncing all over the place, slowing down and sliding past one another, slowing down more and vibrating in place.
Carbon is a type of what special gas?
Greenhouse gas
What is subsistence farming?
Farming to live off of. Farming enough food for your family or community and not relying on grocery stores.
What is a resource that we can't use over and over again or will eventually run out?
non renewable resource
Name two of the four properties we use to classify a star.
color and temperature, size, brightness, chemical composition.
Light years
Trap heat.
What are the three sisters that the Dakota people planted?
Corn, beans, squash
Name 3 types of renewable energy sources
Wind, geothermal, hydroelectric, solar
The brighter a star is the ______________________ its temperature.
hotter
What two physical properties keep the planets orbiting around the sun?
Gravity and inertia
How does carbon and other greenhouse gasses end up in our atmosphere?
Burning, combustion, emission, etc.
What is it called when you plant different plants all together?
Intercropping
Why is sustainable or renewable energy important?
Because nonrenewable energy, like burning coal, is contributing to global climate change
Which color star is the hottest: yellow, white, blue, red/orange?
Blue
What is dark matter?
Matter that does not give off electromagnetic radiation.
How does carbon end up in our geosphere?
Decomposition of organic materials (also sequestration)
What is broadcast seeding and how is different than European farming?
What is happening in global climate change?
Weather is less predictable, places or getting hotter, colder, and storms are getting more severe.