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Final Exam
| Question | Answer |
|---|---|
| The process of gathering information through the senses is called ______. | observation |
| A factor that is manipulated in an experiment to change the dependent variable is the ____. | independent variable |
| 3 m/s north is an example of a(n) ____. | Velocity |
| The relationship among speed, distance, and time is ____. | S=d/t |
| Newton's first law of motion is also called the law of ____. An objects resistance to change in its current state of motion. | Inertia |
| A feather will fall through the air more slowly than a brick because of ____. | Air resistance |
| The acceleration due to gravity is ____. | 9.8m/s2 |
| According to Newton's second law of motion, ____. | F=m x a |
| The statement "to every action there is an equal and opposite reaction" is ____. | Newton's 3rd Law |
| Newton's first law of motion states that an object remains at rest unless a(n) ____ force acts on it. | unbalanced |
| A bus engine transfers chemical potential energy into ____ so that the bus moves. | kinetic |
| According to the law of conservation of energy, the total amount of energy in the universe ____. | remains constant |
| What is an example of a compound/complex machine? | bike |
| Which is an example of heating through conduction? | touching a hot stove |
| The statement that current is equal to the voltage difference divided by the resistance is known as ____. | Ohm's Law |
| A path that allows only one route for an electric current is called a ____. | Series Circuit |
| Lightning is ____. | large discharge of static electricity |
| Which of the following is a device designed to open an overloaded circuit and prevent overheating? | Circuit breaker |
| An area with excess electrons has a net _____ charge; an area with a deficit of electrons has a net _____ charge. | negative, positive |
| Two objects will attract one another when they have ____. | opposite charges |
| The south pole of a magnet ____. | attracts a north pole |
| When you break an iron magnet into two pieces, you get ____. | 2 north poles and 2 south poles |
| What is an example of a nonrenewable source of energy? | Coal, natural gas, oil |
| A wave will travel only as long as it has ____ to carry. | energy |
| When light bounces off a surface it is called ____. | Reflection |
| Refraction is bending of light that occurs when changing from one ______to another. | medium (air) to another (glass) |
| To produce sound, an object must be ____. | Vibrating |
| Sound travels fastest in a ____. | Solid |
| Electromagnetic radiation with the shortest wavelengths (highest frequency) is ____. | gamma rays |
| What is the thing in an experiment that is changed or manipulated by the experimenter to see how it affects something else? | Independent variable |
| 5 m/s, North is an example of... | Velocity |
| An objects resistance to change in its current state of motion | Inertia |
| a transfer of _____________ from one thing to another (like hitting a baseball with a bat) | Momentum |
| slowing down because of a force in the opposite direction an object is moving is _____. | Friction |
| An ____________force will produce motion. | Unbalanced |
| Forces always occur in equal and opposite pairs, typically in an action-reaction relationship. | Newton's 3rd Law |
| F=m x a The amount of force required to accelerate an object is proportional to the mass of the object. | Newton's 2nd Law |
| Law of Inertia: An object in motion will stay in motion and an object at rest will remain at rest until an outside force acts upon the object. | Newton's 1st Law |
| Force of gravity, depends on location | Weight |
| The amount of matter in something that remains constant regardless of location. | Mass |
| A lens that curves out and the focal point is after the light passes through the lens. | Convex lens |
| Two nuclei combine to form one large nucleus, like in the Big Bang Theory. | nuclear fusion |
| Your voice echoes off a flat wall | Reflection |
| Highest frequency (lowest wavelength) electromagnetic waves | Gamma Rays |
| Type of waves that travel in compressional (or longitudinal) waves | Sound waves |
| bending of light waves as it changes medium (air to water) | Refraction |
| The strongest magnetic force is here | Magnetic poles (opposites attract; N-S) |
| A: Waves that travel in a medium. B: Waves that travel in a vacuum. | A: Mechanical B- EM Waves |
| How are wavelength and frequency related? | One increases, the other decreases |
| This is the reason why the moon stays in orbit and why things are attracted to the ground. | Law of Gravitation |
| Force of attraction between all objects in the universe; depends on mass and distance | Gravity |
| Seesaw is an example of which simple machine? | Lever |
| Rate of doing work (W/t) | Power |
| Unused gasoline in your car is which type of energy? | Chemical potential |
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kbordelon2
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