Science Word Scramble

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Question	Answer
What is motion?	An object’s change in position relative to a reference point.
How do you know when you are in motion?	Because you see other objects pass by. (This is the reference point.)
A force must cause a change in _____.	Motion.
What is force?	Any push or pull in a particular direction.
When you push an object, the force is in the direction of the _____.	Push.
When you pull an object, the force is in the direction of the _____.	Pull.
What are the four forces found in nature?	Electric, magnetic, gravity, and friction.
What is gravity?	The force of attraction between all objects and the universe. (Universal gravitation/ Newton's law of gravity.)
The force of gravity between two objects _____ as the distance between them increases.	Decreases.
When a shuttle leaves Earth's atmosphere, gravity _______.	Weakens.
Why do the planets orbit the sun?	Because the sun has the greatest gravitational pull.
The farther away a planet is to the sun, the _____ the gravity.	Weaker.
The amount of gravitational pull depends on the ______- of an object.	Mass and density. (Mass increases, gravity increases.)
Your ______ never changes.	Mass.
Your weight on the moon is -/6 your weight on Earth. Your weight on Jupiter is -.-3 times as much on Earth.	1, 2.5
What is friction?	The force that opposes the motion of an object.
What is friction caused by?	When two things rub together.
What does the initial force (F) keep the object doing?	Moving.
The force of friction (f) acts in the _____ direction.	Opposite.
What would happen without friction?	An object would not be able to slow down.
Too much friction causes metals to _____ _____ and over _____.	Wear out, over heat.
Do all objects fall in different speeds in outer space?	No, all the same speed.
What are the three types of friction?	Rolling, Sliding, and fluid.
Sliding is friction involving ______.	Solids.
Rolling is friction involving a ______.	Wheel.
Fluid is friction with ______ and ______.	Liquids, gases.
What is air resistance?	Friction involving air.
What are two ways to reduce friction?	Add wheels, lubricants.
What are two examples of lubricants?	Oil and wax.
What is inertia?	The tenancy for an object to stay at rest or in motion.
When the engines on a spacecraft are turned off, it will go through space at the same _____ and ______.	Speed, direction.
Does your body have inertia?	Yes.
The more massive an object, the _____ inertia it has.	more.
Bowling bass are made heavy because they are difficult to ____.	Stop.
What is momentum?	The measure of how difficult it is to stop an object.
What is Newton's first law?	That an object at rest wants to stay at rest and an object in motion, wants to stay in motion. Unless stopped by an unbalanced force.
An unbalanced force can change the _____ or/and ______.	Speed, direction.
What are balanced forces?	Forces that are equal in size but opposite in direction.
What are unbalanced forces?	Forces that are not equal in size/direction and cause a change in motion.
What are the four forces of the airplane? (In order.)	Lift, Thrust, Weight, Drag. (Lemons Throw Watermelons Drastically) (To lift, drag must be greater)
What is speed?	Distance traveled within a certain amount of time?
Speed= _____ divided by ______.	Distance, time. (Distance is on top of the triangle.)
Meters= _____ (unit)	m/s
km= ______ (unit)	km/hr
Miles= _____ (unit)	M/hr
What is the independent variable?	Time.
What is the dependent variable?	Distance.
What is constant speed?	A speed that doesn't change. (Distance divided by time .)
Average speed= total _____ divided by total _____.	Distance, time. (Only up to where the bar reaches.)
When riding a bike, ______ is the unbalanced force.	Pedaling.
What is acceleration?	A change in speed.
Slowing down is _____ acceleration or ______.	Negative, deceleration.
What is Newton's 2nd law?	An object acted upon by a force will accelerate in the direction of the force.
The greater the force, the _____ acceleration.	More.
The greater the mass, the more ____ needed to accelerate the object.	Force.
As the force increases, acceleration ______.	Increases.
Force= _____ x _______	Mass, Acceleration.
Force= _____ (unit)	Newtons.
Mass= ______ (unit)	Kilograms.
Acceleration= _____ (unit)	meters/s, m/s2
What is velocity?	Speed in a particular direction.
If two velocities are in the same direction, you _____ them.	Add.
If two velocities are in opposite directions, the label on the answer should be in the direction the _____ is going.	Person.
Velocity= ______ divided by chosen _____-.	Distance, time.
Do forces always act in pairs?	Yes.
What is Newton's third law?	For every action force, there is an equal and opposite reaction force.

Created by: emarciante