Observations
What is an observation
the act of noticing or detecting something using our senses, like sight, hearing, touch, smell, or taste.
What is density?
the ratio of mass to volume
What is light?
electromagnetic radiation
what are the 2 most common elements found in stars?
hydrogen(H) and helium(He)
this is an example of a jovian planet and what its made of
jupiter, saturn, neptune, uranus
made of gasses
What is an example of an inference?
a conclusion or judgment we make based on our observations. Any example
How do you calculate density?
d=mass/volume
what is an example of a type of light?
visible light, UV, infrared, microwaves
how do stars produce energy?
nuclear fusion
this is an example of a terrestrial planet and what its made of
mercury, venus, earth, mars
made of solids/rocks
What is the difference between an observation and an inference?
observation= using senses to notice something
inference= interpretation of observation
What units are used to measure mass?
grams or kilograms
what information can light spectrums give us?
the types of elements in a star
where are stars formed?
in nebulas
describe the shape of a very eccentric orbit
it would be more oval like
Give an example of a scientific observation.
any observation involving a science concept
why is weight different from mass?
weight changes due to gravity, mass stays the same
what are absorption lines?
a pattern of dark lines at precise wavelengths
what information does the H-R diagram give us?
a star's size, luminosity, color, temperature, and life stage
what is Kepler's 3rd law of planetary motion?
planets that are further from the sun, take longer to revolve around the sun
Why are observations important in science?
helps us better understand the world around us
an object that is less dense than water would do what?
float
what is a spectrometer?
an instrument that can analyze the light emitted by stars, or other celestial objects
what is the difference between a main sequence and red giant star?
main sequence= average size and luminosity
red giant= very big, very bright
Where will a planet be traveling the fastest in it's orbit?
when its closer to the sun