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What is a hypothesis?
A prediction or educated guess
An object in motion has what kind of energy?
kinetic energy
The force that keeps you on the ground is called what?
Gravity
What is the unit used to measure energy?
Joule
All things are made of what?
Matter
The force that controls the motion of the solar system is called what?
Gravity
Mass is the amount of what in an object?
Matter
Why is the Sun’s gravitational pull the greatest in our solar system?
Because the sun has the most mass
Name the four non-renewable source of energy.
coal, oil, natural gas, and nuclear energy
_____________is the amount of space that an object takes up.
Volume
Justin wants to determine the effect of fertilizer on the growth of grass. Identify the variables.
independent variable: fertilizer
dependent variable: grass growth?
What is mechanical energy?
total amount of motion and position of an object
or total amount of kinetic and potential energy in a system
What are the three subatomic particles of an atom?
protons, neutrons, and electrons
Which type of observation uses numbers and measurements?
quantitative
What does a conductor do?
Allows heat or electricity to pass through.
What is radiation?
thermal/heat transfer through waves
What is conduction?
thermal/heat transfer through solids, liquids, and gases when two objects touch.
As you digest food, what energy transformation is happening?
chemical energy
Why do you weigh less on the Moon than on Earth?
The moon has less mass than Earth.
Name the 5 renewable sources of energy.
solar, wind, hydropower, geothermal, or biomass
Which type of observation describes qualities like appearance or texture?
qualitative
What two factors influence gravitational force?
mass and distance
Law of conservation of Energy states that....
Energy can never be created or destroyed.
Particles of matter move faster or slower depending on how much ______ they have.
thermal energy
A group of two or more atoms bonded together is called what?
Molecule