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IPC CBE PART B
| Question | Answer |
|---|---|
| If you ride your bicycle down a straight road for 500m then turn around and ride back, your distance is ______ than your displacement. | Greater than, |
| Motion is a change in ______. | position. |
| The speed you read on a speedometer is _____. | instantaneous speed. |
| 3 m/s north is an example of a(n)____. | velocity |
| The relationship among speed, distance, and time is ______. | s = d/t |
| A single point on a distance - time graph tells the ______. | instantaneous speed. |
| A merry-go-round horse moves at a constant speed but at a changing ______. | velocity. |
| Acceleration is the rate change of _____. | velocity |
| if you ride your bike up a hill, then ride down the other side, your acceleration is_____. | first negative, then positive |
| the equation used to find acceleration is a =____. | V/f-Vi/t |
| a horizontal line on a velocity/time graph shows _____ acceleration. | zero |
| inertia varies depending on_____. | mass |
| Newton's first law of motion is also called law of _____. | inertia |
| the upward force on an object falling through the air is _____. | air resistance |
| the relationship among mass, force and acceleration is explained by _____. | Newton's second law of motion |
| a feather will fall through the air more slowly than a brick because of ______. | air resistance |
| in absence of air, a penny and a feather that are dropped from the same height at the same time will ______. | fall at the same rate |
| the acceleration due to gravity is ______. | 9.8 m/s2 |
| according to newton's second law of motion, _____. | F= m x a |
| when an objct moves in a circular path, it accelerates toward the center of the circle as a result of ______ . | centripetal force |
| the path of a projectile is ______. | curved |
| for any object, the greater the force that's applied to it, the greater its_____ will be. | acceleration |
| the size of the gravitational force between two objects depends on their_____. | masses and the distance between them |
| as you get farther from the earth, your weight will _____. | decrease |
| when a force is exerted on a box, an equal and opposite force is exerted by the box. these forces are called ______ forces. | action-reaction |
| A real car moving at 10km/h has more momentum than a toy car moving at the same speed because the real car _______ | has greater mass |
| In the equation p = m x v, the p represents _________. | momentum |
| "To every action there is a equal and opposite reaction " | Newtons third law |
| The unit of momentum is ______. | kg x m/s |
| When two balls collide, the momentum of the balls after the collison is explained by _____. | The law of conservartion of momentum |
| A 300-n force acts on a 25kg object. The acceleration of the object is _______. | 12m/s^2 |
| A 3,000 N force acts on a 200kg object. The acceleration of the object is ________. | 15m/s^2 |
| An object that is in free fall seems to be ________. | weightless |
| If gravity did NOT affect the path of a horizontally thrown ball, the ball would ______. | Travel horizontally. |
| The kinetic energy of an object increases as its ________ increases. | Velocity |
| Increasing the speed of an object _____ its potential energy. | does not affect. |
| The SI unit for energy is the _____. | joule |
| You can calculate kinetic energy by using the equation _______. | (m/s) |
| Which of the following devices does not make use of electrical energy ? | upright piano |
| In a nuclear fusion reacgtion, mass is transformed into ______. | energy |
| A bus engine transfers chemical potential energy into _____ so that the bus moves. | kinetic energy. |
| According to the law of conservation of energy, the total amount of energy in the universe _______. | remains constant |
| If a weight lifter is holding barbells above his head, what does he have to do to perform work ? | lower barbell |
| A slanted surface used to raise an object is a(N) | inclined plane |
| A device that does not work with only one movement and change the size or direction of a force is a(n) | simple machine |
| A bar that is free to pivot about a fixed point is a ______. | lever |
| The rate in which work is done is called | power |
| The amount by which a machine multiplies an effort force is called the _______. | mechanical advantage |
| An incline plane with one or moresloping sides forms a machine called a ______. | wedge |
| An incline plane wrapped around a cylindrical post is a _______, | screw |
| A machine that changes only in the direction of a force has a mechanical advantage of _______. | 1 |
| A winding mountain road is an example of a(n) ______. | incline plane. |
| When two or more simple machines work together , they are called a(n) | compund machine |
| A lever with am increase of one is used to | Increase force |
| Three of the following simple machines are basically the same. The one that does not belong is | the wedge |
| An arragement of pulleys designed to reduce the effort force is called a | block tackle |
| Two simple machinesd that are part of a bycycle are a(n) ______. | gear and a wheel and axle |
| A material that reduces the flow of heat by conduction, convention, and radiation is _____. | an insulator. |
| Energy from the sun travels to earth as _______. | radiant energy |
| The inside surface of the glass inside the vacuum bottle is coated with aluminum to prevent heat loss by ______. | conduction. |
| Solar collector are parts of a(n) | active solar heating system |
| refrigerators and air cons are examples of ______. | heat movers |
| The process by wich enegine fuels burn is called ______. | combustion |
| Gasoline engines and combustion disel engines are ______. | internal combustion engine. |
| A device that heats your home by removing thermal energy from one location and transferring it to another location at a different temperature is a(n) | heat mover |
| A device that turns thermal energy into machine energy is a ______. | heat engine |
| Through which of the following will convention most likely occur ? | liquids and gases |
| which of the following is the correct sequence of strokes in a four - stroke engine ? | intake, compression, power, exhaust. |
| resistence is measured in a unit called the ________. | ohm |
| The statement that current is equal to the voltage difference divided by the resistence is known as ______. | ohm's law |
| A path that allows only one route for an electric current is called a _______. | series circuit. |
| Electric charge that has accumulated on an object is reffered to as | static electricity |
Created by:
jromo11