Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
cody stidham
exam studyguide
| Question | Answer |
|---|---|
| a measurement standard is defined as | the exact quantity people agree to use for comparison |
| the prefix kilo means | 1,000 |
| the correct symbol for the si unit of temp is | k |
| the si unit that is used to measure time is | the second |
| the variable that is plotted on the horizontal or x-axis is called the | independent variable |
| in a graph showing temp change of a material over time, temp change is the | depenent variable |
| the best type of graph to use to show how some fixed quantity is broken down into parts is | a circle graph |
| a benefit of the si system is that it is | based on multiples of ten |
| a box is 25cm long, 6cm wide, and 4 cm high. How many cubic cm of water can it hold? | 600 |
| the light bulb is an example of | technology |
| chapter 2. motion accurs when their is a change in | position |
| when you push a sled and it begins to go down a hill you cause | positive acceleration |
| an object in motion at a constant velocity will change its motion only if a _______ force acts on it. | unbalanced |
| Acceleration is calculated by dividing change in_______ by total time | position |
| The relationship s=d/t can be used to calculate speed, _____ or time. | distance |
| If you were trying to get out of the way of a storm, you would need to know the _____ at which it was moving. | direction |
| Acceleration occurs when ______ changes. | velocity |
| The total distance traveled divided by the ________ is the average speed. | time |
| _______ includes both distance and direction. | Displacement |
| In a car crash, ________ could cause you to crash into the windshield. | inertia |
| Chapter 3- The upper 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 the 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 object 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 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 distance between them |
| Chapter 4 Energy doesn't have to involve | motion |
| Energy is the ability to cause | change |
| Energy is measured in | joules |
| AS mass decreases, kinetic energy | decreases |
| In a car engine, burning fuel produces heat, which causes gases to expand, producing | kinetic energy |
| The sum of potential and kinetic energy in a system is called | mechanical energy |
| Carbohydrates and fats provide our bodies with energy in the form of | calories |
| Energy in the form of motion is _________ energy | kinetic |
| A rock at the edge of a cliff has _____ energy because of its position | potential |
| According to the law of conservation of energy, energy _____ be created or destroyed. | cannot |
| Chapter 5 When a machine is used to do work, the force applied by a machine is called | the effort force |
| Under certain conditions it is ____ to get more work out of a machine than you put into it. | not possible |
| Some machines _____________ that is applied to them | don't multiply the force |
| Examples of all three levers ________ in the human body | are found |
| In order for work to be done on an object, the object must ____. | move. |
| __________ mechanical advantage is determined with the equation MA=Fr/Fe | ideal |
| Power is work done over a | time |
| The distance between the threads of a screw is called the | pitch |
| Friction changes the useful work of a machine into | mechanical energy |
| Reducing friction increases the ______ of a machine | efficiency |
| Chapter 6 In an internal combustion engine, fuel burns ____ the engine in chambers called cylinders | inside |
| Winds are examples of _______ currents | convection |
| Dark colored materials _______ radiant energy | absorb |
| _________ is a measure of the average kinetic energy of all the particles in an object | Heat |
| In a forced air heating system the warm air circulates by | convection |
| Solar energy can be changed into thermal energy _____ any work being done | without |
| __________ is the transfer of energy in a fluid | Convection |
| Conduction is the transfer of energy by the _____ between particles. | collisions |
| A device that converts thermal energy into mechanical energy is a | heat engine |
| Energy from the sun travels to earth as | radiant energy |
Created by:
codystidham
Popular Physical Science sets