scientific method
The study of the natural world using evidence and/or logic.
What is science?
All of space and everything contained within it.
What is the universe?
The disproved, Earth-centered model of the universe.
What is the geocentric model?
A huge sphere of very hot, glowing gas.
What is a star?
The specific name of the galaxy that we live in.
What is the Milky Way?
An educated guess about the relationship between independent and dependent variables.
What is a hypothesis?
A massive collection of stars, dust, and gas held together by gravity.
What is a galaxy?
The sun-centered model of the solar system/universe.
What is the heliocentric model?
The attraction and mutual pull between any two objects in space.
What is gravity?
This type of galaxy has no definite shape.
What is an irregular galaxy?
The variable being observed or measured, which depends on the changes made by the scientist.
What is the dependent variable?
This type of galaxy has the shape of a flattened ball.
What is an ellipitical galaxy?
The tool Galileo improved/invented that provided observational evidence supporting the heliocentric model.
What is the telescope?
An elongated circle that describes the geometric shape of planetary orbits.
What is an ellipse?
What is a statement that scientists expect to happen every time under a particular set of conditions?
What is a scientific law?
The variable that the scientist directly manipulates or changes in an experiment.
What is the independent variable?
The estimated age of the universe according to the Big Bang Theory.
What is 13.7 billion years old?
The scientist who was the very first to propose the heliocentric model.
Who is Copernicus?
The tendency of a moving object to continue in a straight line or a stationary object to remain at rest.
What is inertia?
This type of galaxy has a bulge in the center.
What is a spiral galaxy?
A well-tested concept that explains a wide range of observations.
What is a scientific theory
The three general shape classifications of galaxies in space.
What are spiral, elliptical, and irregular?
The scientific law stating that the farther away a galaxy is from us, the faster it moves away.
What is Hubble's Law?
The two balanced forces/properties that keep planets moving in orbit around the Sun instead of flying off into space or falling into the Sun.
What are gravity and inertia?
What happened to Galileo after he presented his evidence about the Heliocentric model?
He was placed on house arrest.