A system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation is called a ...
What is THEORY
100
The space surrounding the nucleus of an atom contains...
What is ELECTRONS
100
Apparently fixed, recognizable patterns of stars and the regions of space around them.
What is CONSTELLATIONS.
100
The average sunspot cycle is this long...
What is 11 years.
100
This planet has seasons like Earth's because its axis tilts at an almost identical angle...
What is MARS
200
Earth scientists assume that the causes of natural events or phenomena can be determined by
What is USING SI UNITS
200
What are the three parts of a water molecule?
What is 2 Hydrogen & 1 Oxygen.
200
A main-sequence star generates energy through nuclear fusion as hydrogen fuses into __________ in the core of the star.
What is HELIUM
200
This is the hottest layer of the sun's atmosphere...
What is CORONA
200
This separates the inner from the outer planets...
What is the ASTEROID BELT
300
Which of the following is NOT part of the compositional structure of Earth?
- global ocean
- core
- mantle
- crust
What is GLOBAL OCEAN.
300
What type of ion forms when an atom loses electrons?
What is POSITIVE.
300
Hubble's discovery that there is red shift in the spectra of galaxies led to an understanding that the universe is...
What is EXPANDING!
300
These two elements make up most of the sun's mass...
What is HYDROGEN AND HELIUM
300
A region of the solar system that is just beyond the orbit of Neptune and contains small bodies made mostly of ice is called..
What is KUIPER BELT
400
The shape of Earth most closely resembles a(n):
What is OBLATE SPHEROID.
400
When salt is dissolved in water, water is the...
What is SOLVENT (remember! Water is the universal solvent!)
400
A galaxy with no particular shape.
What is an IRREGULAR GALAXY.
400
These are the three layers of the sun's atmosphere...
What is PHOTOSPHERE, CHROMOSPHERE, CORONA.
500
Which of the following is a probable source of Earth's magnetic field?
What is IRON CORE.
500
When hydrogen and oxygen combine to form water, water would be ...
What is PRODUCT (Remember: reactants --> products)
500
A shrinking region of space flattened into a disk with a central concentration of matter...
What is PROTOSTAR
500
Particles thrown off the sun's corona that can affect Earth's magnetic field are called...
What is CORONAL MASS EJECTIONS
500
Planet-like bodies that circle stars other than Earth's sun are called...