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UNIT 2 TEST SCIENCE
| Question | Answer |
|---|---|
| VOCAB: an event or process that leads to a result or change | Cause |
| VOCAB: a result or change that happens because of an event or process | Effect |
| VOCAB: the moment when two objects hit each other | Collision |
| VOCAB: a self-contained unit on an aircraft, spacecraft, vehicle, or vessel that can be detached for a particular function | Pod |
| VOCAB: to apply a force | Exert |
| VOCAB: a push or a pull that can change the motion of an object | Force |
| VOCAB: speed in a particular direction | Velocity |
| VOCAB: the amount of matter that makes up an object | Mass |
| VOCAB: to reach a conclusion using evidence and reasoning | Infer |
| VOCAB: the energy that an object has because it is moving | Kinetic Energy |
| VOCAB: a force between an object and the surface it is moving over | Friction |
| Name the 5 ways an object’s velocity can change | 1 Start moving 2 Stop moving 3 Speed up 4 Slow down 5 Change direction |
| Explain how you would have to exert force upon an object for it to do each of the following: a. Start Moving- b. Speed Up- c. Slow Down- d. Stop- e. Change Direction- | a. Push object in any direction b. Push it in the same direction it is moving c. Push it in the opposite direction d. Push it in the opposite direction e. Push it in the opposite direction |
| The stronger the force acting upon an object, the stronger the change in _______________________ of that object. | velocity |
| An object sliding across the carpet slows down quicker than on a bare floor, because the carpet exerts more ___________________. | friction |
| Think back to our space pod. The thrusters fire to exert a force in the ___________________________ as the motion of the pod, causing it to stop. | opposite direction |
| Think back to our space pod. If the thrusters fired and caused the pod to move in the opposite direction, the thrusters exerted a _____________________ force than in other missions. | stronger |
| Think back to our space pod. If the thrusters fired and caused the pod to crash into the space station, the thrusters exerted a ________________________ force than in other missions. | weaker |
| Wheelchairs are often designed differently based on their intended purpose. Wheelchairs used for wheelchair racing are built for speed. That means they need to be __________________ than other wheelchairs. | smaller |
| Wheelchairs are often designed differently based on their intended purpose. Wheelchair rugby players need stability—they crash into each other often, and it’s important that they don’t tip over in a collision. For this reason, rugby wheelchairs are made: | larger |
| Object B is more massive than Object A. If you apply the same strength force to both objects, which object will have a greater change in velocity? | Object A |
| Object B is more massive than Object A. If you apply the same strength force to both objects, which object will have a lower change in velocity? | Object B |
| Complete the following sentence: In a regular space mission, the usual thruster force would cause the pod to stop. Firing the usual force thrusters on the pod would cause it to move in the opposite direction if… | the thrusters on the pod exerted more force than in usual pod missions. This caused the velocity of the pod to change direction. |
| Complete the following sentence: In a regular space mission, the usual thruster force would cause the pod to stop. Firing the usual force thrusters on the pod would cause it to slow down and hit the space station if… | the thrusters on the pod exerted less force than in usual pod missions. This caused the velocity of the pod to slow down and bounce off the space station. |
| When two objects collide, the force exerted on the objects is: | the same |
| When objects have the same mass, the force is: | the same |
| When objects have different mass, the force is: | the same |
| If a larger mass object and a smaller mass object collide, which will have a larger change in velocity? | the smaller mass object |
| If a larger mass object and a smaller mass object collide, which will have a smaller change in velocity? | the larger mass object |
| What are the effects of the collision forces when objects with different masses collide? Discuss Force Strength on the objects and their changes in velocity. | Force strength is the same on both objects The smaller mass object has a greater change in velocity and the larger mass object has a smaller change in velocity. |
| What are the effects of the collision forces when objects with the same mass collide? Discuss Force Strength on the objects and their changes in velocity. | Force is the same on both objects. Since each object has the same mass, they have the same change in velocity. |
| Why can a wrecking ball destroy a building, but a swinging yo-yo cannot? | The wrecking ball has a much larger mass, so it can do more damage to the building. |
| The thruster force on a space pod is the same as in regular missions. On this mission, instead of stopping, the pod slows and collides with the space station. Why did this occur? | The pod is more massive than in previous missions. |
| A space pod collides with a space station. It is 1,100 kg and the space station is 415,400 kg. After the collision, both are moving. Which object had the greater velocity change? | The space pod because it has a smaller mass. |
| IMAGE QUESTION | If objects B is lighter than object C, they'll react differently in a collision. Even though the force is the same on both, the lighter object (B) speeds up or slows down more. So B's velocity changes more because it has less mass. |
Created by:
$Addison$