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GJHS Phy Sci S1 2012
GJHS Phy Sci S1 2012 P1
| Question | Answer |
|---|---|
| You are making _______ observations when you measure the height of each student in your class. | Quantitative |
| Sound waves are ____________. | Longitudinal |
| The loudness of a sound that a person can just barely hear is _________dB. | Zero or One |
| Electromagnetic waves that have wave lengths slightly shorter than those of visible light are called ________ __________. | Ultraviolet rays |
| A mirage is caused by __________ as light passes through layers of air at different temperatures. | Refraction |
| What scale are you using when you use your five senses to gather information? | Observation |
| Facts, figures and other evidence learned through observation are called __________. | Data |
| A hypothesis is a possible ___________ for observations. | Explanation |
| An example of qualitative observation is: A. 2.7g or B. Green | Green |
| When an object's distance from another object is changing, it is in _____________. | Motion |
| A place or object used for comparison to determine if something is in motion is called a ________ ___________. | Reference point |
| Liter, meters, and grams are all ___________ of measure. | Units |
| The basic SI unit of length is the __________. | Meter |
| If you know the distance an object has traveled in a certain amount of time, you can determine its __________. | Speed |
| Speed equals distance divided by _________. | Time |
| If the speed of an object does NOT change, the object is traveling at a(n) __________ ________. | Constant speed |
| If an object moves in the same direction and at a constant speed for 4 hours, what can you say about the object's velocity? | The object's velocity did not change |
| A train that travels 100 kilometers in 4 hours is traveling at what average speed? | 25km/h |
| When you know both the speed and the direction of an object's motion, you know the __________. | Velocity |
| You can show the motion of an object on a line graph in which you plot distance against ______. | Time |
| In graphing motion the steepness of the slope depends on: | The speed of the object |
| On a graph showing distance versus time a horizontal line represents an object that is: | Not moving |
| The rate at which velocity changes is called _______. | Acceleration |
| Changing direction is an example of ___________. | Acceleration |
| The moon is accelerating because it is changing _________. | Direction |
| To determine the acceleration rate of an object you must calculate the change in velocity during each unit of ________. | Time |
| If velocity is measured in kilometers per hour, and time is measured in hours the unit of acceleration is ________. | Kilometers per hour per hour or km/h2 |
| In Physical Science a push or a pull is called: | Force |
| When two equal forces act on the same object in opposite directions, the net force is: | Zero |
| What happens when two forces act in the same direction? | They are added together |
| The tendency of an object to resist any change in its motion is known as: | Inertia |
| The amount of matter in an object is called its: | Mass |
| Force = | Mass X Acceleration |
| You can increase acceleration by _____________ mass. | Decreasing |
| The force that one surface exerts on another when the two rub together is called _________. | Friction |
| Which of the following is an example of rolling friction: A. a boat on the water B. hands rubbing together C. Bike tires on the road as you ride | Bike tires |
| When the only force acting on a falling object is gravity, the object is said to be in __________ ____________. | Free fall |
| The force that pulls falling objects towards earth is called: | Gravity |
| If you are on the moon, your weight would be roughly what fraction of your weight on Earth. | 1/6 |
| The force of gravity on a person at the surface of a planet is known as: | Weight |
| The Law of Universal Gravitation states that any two objects in the universe, without exception: | Attract each other |
| Objects falling through air experience a type of friction called: | Air resistance |
| According to Newton's third law, when a hammer strikes a nail, the nail: | Exerts an equal force back on the hammer |
| Two figure skaters who push off of each other, will move at the same speed, if they have the same __________. | Mass |
| The product of an object's mass and velocity is called its: | Momentum |
| Which law explains how gas is released from burning fuel in a rocket produce thrust? | Newton's Third Law (the Equal and Opposite Law) |
| Any force that causes an object to move in a circle is called ______________ force. | Centripetal |
| Visible light is an example of _________ energy. | Electromagnetic |
| A disturbance that transfers energy from place to place is called a ___________. | Wave |
Created by:
Ms. Traynor-Grimes (Ms.TG)
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