Forces
This is the force that pulls all objects toward the center of the Earth.
Gravity
This is the ability to do work or cause change.
Energy
The horizontal line, or x-axis, on a motion graph almost always represents this variable.
Time
The size of the gravitational pull between two objects depends on the distance between them and this other property.
mass
This is the official name for the day in June when the Northern Hemisphere has its longest period of daylight.
summer solstice
When two forces on an object are equal and opposite, they are described by this one word.
Balanced
This type of energy is stored in an object, often due to its position or condition.
Potential Energy
On a position-time graph, a flat, horizontal line means that the object is doing this.
not moving
This is the scientific term for the measure of the force of gravity acting on an object, often confused with mass.
weight
When the Sun is directly over the Equator, resulting in equal hours of daylight and darkness all over Earth, this event is called an...
Equinox
The formula for this is mass times acceleration, and its unit is the Newton.
Force
The famous Law of Conservation of Energy states that energy can neither be created nor destroyed, only ________ or ____________.
transferred or transformed
On a position-time graph, the mathematical term for the slope or incline of the line, which tells you WHAT about the object?
Its speed
The unit used to measure both work and energy, named after a famous English physicist.
Joule
Earth's distance from the Sun changes throughout the year, but the seasons are actually caused by this constant factor.
the 23.5 degree tilt
The Law of Motion that says all objects in motion will stay in motion...
1st Law
A moving object's kinetic energy increases if you increase its mass or this factor.
Velocity
This movement is shown on a velocity-time graph by a straight line that is sloping upward.
Constant acceleration
On the surface of the Moon, an object's weight would be about one-sixth of its Earth weight, but this property would remain exactly the same.
mass
When the Northern Hemisphere is experiencing spring the Southern Hemisphere is experiencing this season.
fall
What is the other name for Newton's 3rd law of Motion
Action - Reaction Law
If you triple the mass of a moving object, what happens to its Kinetic energy?
it Triples
On a position-time graph, a line that is curving downward shows that the object's speed is doing this.
decreasing
Galileo observed that all objects fall at the same rate, but he used this force (often neglected in early calculations) to explain why a feather falls slower than a rock in the atmosphere.
air resistance
When the Tropic of Cancer is receiving the most direct sunlight, the Southern Hemisphere is experiencing this season
Winter