Chapter 12 part 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Force | Push or pull makes object start moving or stop moving, speed up or slow down or change direction
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| Friction | Force between surfaces that slows objects down or stops them from moving
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| Speed | Distance object moves in a certain time
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| Inertia | The tendency of an object to remain in motion or to stay at rest unless acted upon by an outside force
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| Work | Use of a force to move an object a certain distance
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| Energy | Ability to do work, either to make an object move or to change matter
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| Simple Machine | Machine with few moving parts, making it easier to do work
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| Effort Force | Amount of force needed to move something
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| Load | Object being lifted or moved by a machine
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| What is the difference between a simple machine and a machine? | A simple machine has few parts.
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| What are the two parts of a lever? | fulcrum and bar
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| When a pulley wheel is attached to something it is a _______________? | Fixed Pulley
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| Which simple machine has a bar that passes through the center of the wheel? | Wheel and Axle
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| Which simple machine has two inclined planes back to back? | Wedge
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| What simple machine has a wheel and string to lift things easier? | Pulley
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| What machine has wheels and teeth? | Gears
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| What does more pulleys do for you? | Makes it easier
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| What do two or more simple machines together make? | Compound Machine
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| What simple machine is an incline plane twisted? | Screw
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| What two simple machines make a pair of scissors? | Lever and Wedge
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| What is the measure of how much useful work a machine puts out compared to work put in called? | Efficiency
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| When gears move on a machine energy is a lost to what? | Friction
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| Forces make objects____________? | Slow down or change directions
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| Friction makes objects _________ down? | Slow down or stop
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| Energy that is moving(like throwing a ball) is ___________energy | Kinetic
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| Energy that is not moving or stored (like a pencil sitting on your desk) is __________ energy. | Potential
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| What kind of energy do we get from our food? | Chemical Energy
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| What kind of energy do we get from falling water or wind? | Mechanical Energy
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| What kind of energy do we get from the sun? | Light Energy
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| What kind of energy do we get from a stove or fire? | Thermal Energy
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| A ramp is what kind of simple machine? | Inclined Plane
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| Your teeth are what kind of simple machine? | Wedge
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| A flagpole has what kind of simple machine attached to it? | Pulley
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| A turn jack is what kind of simple machine? | Screw
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| A round doorknob is what kind of simple machine? | Wheel and Axle
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| A teeter totter is what kind of simple machine? | Lever
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| What simple machine do you use playing baseball? | Lever
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| What simple machine is a window blind? | Pulley
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| What force pulls items to the ground? | Gravity
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| If you are loading heavy boxes onto a truck what simple machine might help you? | Inclined Plane
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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