Science Unit 4
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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| What factors affect acceleration of an object? | Net force and mass
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| Describe an action/reaction situation. | Swimming and a rowing boat
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| What does an unbalanced force do to the object it's active on? | Makes it move
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| What does acceleration depend on? | An object's mass
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| What does a Newton measure? | Force
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| What are some ways to reduce friction? | Lubricants like oil and soap
Decrease the surface area of an object
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| Why do things eventually fall on the ground? | Gravity
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| Describe friction. | Contact force
When two objects rub against one another, _____ opposes their motion
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| Describe intertia. | The tendency of a moving object o keep moving in a straight line
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| Describe Netwon's laws. | Explains how forces affect the motion of objects
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| Describe Newton's first law of motion. | An object at rest tends to stay at rest unless acted upon by an unbalanced force
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| Describe Newton's second law of motion. | Acceleration depends on an object's mass and the amount of net force applied to it
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| Describe Newton's third law of motion. | When an object exerts a force on another, the second object exerts an equal force in the opposite direction
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| Define force. | Any push or pull on any object
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| Examples of static, sliding, and rolling friction. | Static - opposes the downward force of a book on a leaning desk, keeps the book in place
Sliding - a big box slides when a force pushes on it
Rolling - skates roll on the ground
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| Describe a balanced force acting on an object. | In tug-of-war, if both groups apply equal forces, the forces are balanced
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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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Created by:
blakelyk
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