3rd Grade Science : Physical Science
Study concepts, example questions & explanations for 3rd Grade Science
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Example Questions
Example Question #22 : Predictions Of Future Motion Through Patterns
Ashley wants to investigate how objects move and see if she can make correct predictions. She knows she will have to observe the object's motion. She wants to see which surface material will allow a toy car to get down a ramp in the least amount of time. She tests the car on wood, plastic, carpet, and grass.
Using the collected data, which answer choice states a pattern that can be identified regarding the carpeted surface?
The carpeted surface allowed the car to roll/slide but it took the longest of the three surfaces that worked.
The carpeted surface allowed the car to roll/slide, and it was the quickest of the three surfaces.
The carpeted surface allowed the car to roll/slide, but it was so slow it did not make it across the finish line.
The carpeted surface did not allow the car to roll/slide.
The carpeted surface allowed the car to roll/slide but it took the longest of the three surfaces that worked.
There is more than one pattern that may emerge from data collected during experiments or investigations. In this investigation, Ashley could see a pattern with the car that rolled down the carpeted surface. The car did make it down the ramp, but it was the slowest of the three that were able to make it down the slope.
Example Question #2 : Use Collected Data To Show Patterns In Motion
Sally and Reina collect data during an experiment and believe that they can use patterns to predict the future motion of objects. Based on the data table below, what can they predict will happen with a marble that weighs 5 grams?
The cup will move less than one inch.
The cup will move more than one inch.
There is not enough information to make a prediction.
The cup will move one inch.
The cup will move less than one inch.
This data reveals a pattern about the cup's motion based on the measurements taken. The cup moves a greater distance as the marble's mass increases. An appropriate prediction would be that the cup would move less than one inch if the marble were to weigh 5 grams. This marble's mass would be less than the others, so it would not move the cup as far.
Example Question #31 : Physical Science
Motion occurs in predictable patterns.
True
False
True
The statement in the question is correct. Motion does occur in predictable patterns. We can observe the motion of an object and look for patterns within the data measurements to determine what may happen in the future.
Example Question #25 : Predictions Of Future Motion Through Patterns
The patterns of an object’s motion in various situations can be observed and measured; when that past motion exhibits an irregular pattern, future movement can be predicted from it.
True
False
False
Morion cannot be predicted if there are irregular patterns in the observed and measured data. If the data does not have a regular trend that can be followed, it is challenging, if not impossible, to determine what might happen to the object's motion in the future.
Example Question #1 : Investigate How Balanced Forces Affect An Object's Motion
Does this photo show unbalanced or balanced forces? Explain why.
The photo represents balanced forces because both sides are balancing carefully while holding the ropes.
The photo represents unbalanced forces because there are more players on one side of the rope than the other.
This photo represents balanced forces because both teams have an equal number of players, and they are of similar size.
This photo represents unbalanced forces because the forces are not even on both sides, so there is an unbalance.
This photo represents balanced forces because both teams have an equal number of players, and they are of similar size.
This photo represents a balanced force because each side has an equal number of participants, and they are of similar size. It appears that they are both pulling equally, and they have the same strength. If both sides pull with an equal amount of force, then neither team will move, and it will be a tie.
Example Question #2 : Investigate How Balanced Forces Affect An Object's Motion
What does the term balanced forces mean? Example: James and Noora were both pulling on a tug toy with their dog, and because of balanced forces, neither side was able to move the other!
Two forces are acting the same direction on an object, and unequal in size.
Two forces acting in opposite directions on an object, and equal in size.
Two forces are acting in opposite directions on an object, and unequal in size.
Two forces are acting in the same direction on an object, and equal in size.
Two forces acting in opposite directions on an object, and equal in size.
Balanced forces are two forces acting in opposite directions on an object, and equal in size. In the example, James and Noora have the same force or strength as their dog, so neither side can pull the toy away from the other. If one party were stronger than the other, there would be an unbalanced force, and the stronger team would be able to take the toy away from the weaker side.
Example Question #3 : Investigate How Balanced Forces Affect An Object's Motion
Which direction would this object move with balanced forces working on it?
It would not move.
It would move right.
It would move up.
It would move left.
It would not move.
This object would not move because it has balanced forces working in it. When balanced forces are applied to opposite sides of an object, the object remains motionless. A stronger force needs to be applied to one side for the object to move. Balanced forces mean the power or strength applies to each side is equal.
Example Question #1 : Investigate How Balanced Forces Affect An Object's Motion
This graphic represents a balanced force.
True
False
False
The graphic provided does not represent a balanced force. A balanced force means equal forces are being applied to each side of an object. The arrows would need to be equivalent to represent a balanced force. There is more force being applied in one direction than the other, so the object will move in with force.
Example Question #2 : Investigate How Balanced Forces Affect An Object's Motion
What is the effect of a balanced force on a stationary object's motion?
The object will move in the direction of the weakest force.
There is no effect on the motion.
The object will move in the direction of the strongest force.
The object will move upwards away from the forces.
There is no effect on the motion.
A balanced force means that equal force is being applied to an object on opposite sides. If equal force is being applied, there will be no change in the motion of the object; it will remain stationary. A greater force needs to be applied to one side for movement to take place.
Example Question #3 : Investigate How Balanced Forces Affect An Object's Motion
The groups of people in this photo are both pulling on a rope. Which group will win the tug-of-war game?
The group on the left side will win.
Neither group will win.
The group on the right side will win.
Neither group will win.
This photo represents a balanced force because each side has an equal number of participants, and they are of similar size. It appears that they are both pulling equally, and they have the same strength. If both sides pull with an equal amount of force, then neither team will move, and it will be a tie. In this graphic, neither team will win.
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