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Science test
| Question | Answer |
|---|---|
| Forces can cause a stationary object to begin moving and can cause a moving object to change its ______ or _______. | speed or direction. |
| Once in motion, the boat will continue moving in a straight line at a _______ speed unless acted on by forces. | constant |
| Position can be described using a ________ . | reference point |
| We found that the description of an object's _______ and ______ depended on the reference point chosen. | motion and position. |
| ______ is the process of changing position which involves both ______ and ______. | motion, speed and direction |
| _____ is a measure of the distance an object travels in a given amount of time. | speed |
| _____ let us model the changes in speed and direction. | arrows |
| Why is it important to have a reference direction specified before describing a location in terms of positive or negative? | The reference direction specifies which is a positive/negative direction. |
| knowing an object's position, its direction of motion, and the distance it travels _______ provide a complete description of the objects motion. | doesn't |
| Motion occurs when an object's _____ changes in relation to a _____point. | position and reference |
| If you do not see a car move, how could you tell whether a car was in motion while you were not watching? | compare your position to reference point. |
| An object is _____ in motion relative to a _____ point that moves in the same direction at the same rate as the object because the position of the object relative to the point does_____ change. | not, reference, not. |
| _____ is the difference between the starting point and ending point. thus, the displacement and the total distance traveled_____ always the same. | displacement, shortest, are not. |
| How can an object travel 600 m and yet have a displacement of 0 m? | If you start and stop at the same position, your displacement is zero. |
| _____ is a measure of the distance traveled in a given amount of time. | speed |
| An objects speed can change or be_____. | constant |
| Average speed is determined by dividing the total_____ traveled by the total_____ taken. | distance, time. |
| How many times a day is a satellite orbiting our earth? | twice a day. |
| _____ is the speed and direction of an object. | velocity. |
| Any quantity that has both magnitude and direction as a _____. | vector. |
| Vectors can be represented using _____ in which the length of the arrow represents the _____ if the quantity and direction of the arrow shows the direction of the quantity. | arrows, magnitude |
| If you have a data table with distance and time, which would you put on the horizontal line?______. The vertical line? _____. | time,distance. |
| a _____line on a distance-time graph indicates a constant speed because it has a_____ slope. | straight, constant. |
| A change in the slope of the line indicates a change in _____. | speed. |
| What can u tell about the object's motion if the slope of the line on a distance-time graph decreases? | the object is slowing down. |
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Aw4643