Make observations of an object's motion - 3rd Grade Science

The statement provided is accurate. To support conclusions, data or evidence must be collected. Analyzing data from investigations can help patterns emerge that will assist in predictions about the motion of other objects or future experiments.

Observations are critical in an investigation because scientists are recording what they see, and they measure to collect data for evidence. The observations help support the conclusion that is made. For Ashley's investigation, the most reasonable observation would be, "The toy cars on the grass and carpet moved very slowly, if at all. The cars on the wood and plastic moved quickly. The car on the plastic got down the ramp in the least amount of time.". This statement includes information about which cars move slowly, quickly and the fastest. The data collected sounds reasonable, cars on wood and plastic would move swiftly, and vehicles on grass and carpet would move slowly.

This investigation consists of dropping the ball onto one side of the ramp and then measuring the height each time the ball reaches the opposite side. When looking at the visual and the data table, it can be observed that the height decreases with each roll. The tick marks show the ball ending up in the center by the fifth roll, and the data table shows a steady decline in the numbers.

Each time the ball completes a roll, its height is reduced by 2 inches. Simple subtraction can be used to find the difference between each turn. This information can be used to make a production about future trials or the missing fifth roll.

This data table organizes information and measurements collected during an investigation of an object's motion. The cup moved every time a marble was rolled into it. An accurate observation that could be made is that the heavier the marble was, the further the cup traveled. A pattern can be seen as the marble's weight increases; the distance the cup travels increases as well.

Force can make things move, change shape, or change their speed. Some forces are direct and happen when two things touch (like pushing a friend on a swing) or other happen over a distance (such as a magnet drawing a paperclip closer). Objects only move when there is a force acting on them.

The osprey carrying the fish has more mass (weighs more) than the osprey that is not taking a fish back to the nest. When something has more mass, gravity has more of an effect on it. Gravity works from a distance, so even though the osprey is not touching the ground, it is still affected by gravity. Annie can observe the motion of the birds and compare the movements.

The reason that Heidi cannot keep the ball in the air and it keeps falling back down to Earth is because of gravity. NASA explains what gravity is, "Why do things fall when you throw them or drop them? The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall." It is because of this that the ball returns to Earth and does not stay in the air.

When a player takes a full swing and hits a baseball, they are applying a significant amount of force to the ball and changing the direction and speed of the ball. A bunt is not a full swing, and there is less force applied. When less energy is applied to an object, its motion will not be less than an object that is hit with a greater force.

The motion of the swing changed because the force being applied changed. When DJ was pushing his brother, he was applying force to the swing changing its motion, speed, and direction. When he stopped pushing, the energy was removed, and there was nothing to keep the swing moving. Eventually, the swing came to a stop, and it will not start moving again unless another force is applied to it.

Observations are critical in an investigation because scientists are recording what they see, and they measure to collect data for evidence. The observations help support the conclusion that is made. For Ashley's investigation, the most reasonable observation would be, "The toy cars on the grass and carpet moved very slowly, if at all. The cars on the wood and plastic moved quickly. The car on the plastic got down the ramp in the least amount of time.". This statement includes information about which cars move slowly, quickly and the fastest. The data collected sounds reasonable, cars on wood and plastic would move swiftly, and vehicles on grass and carpet would move slowly.

The statement provided is accurate. To support conclusions, data or evidence must be collected. Analyzing data from investigations can help patterns emerge that will assist in predictions about the motion of other objects or future experiments.

This investigation consists of dropping the ball onto one side of the ramp and then measuring the height each time the ball reaches the opposite side. When looking at the visual and the data table, it can be observed that the height decreases with each roll. The tick marks show the ball ending up in the center by the fifth roll, and the data table shows a steady decline in the numbers.

Each time the ball completes a roll, its height is reduced by 2 inches. Simple subtraction can be used to find the difference between each turn. This information can be used to make a production about future trials or the missing fifth roll.

This data table organizes information and measurements collected during an investigation of an object's motion. The cup moved every time a marble was rolled into it. An accurate observation that could be made is that the heavier the marble was, the further the cup traveled. A pattern can be seen as the marble's weight increases; the distance the cup travels increases as well.

Force can make things move, change shape, or change their speed. Some forces are direct and happen when two things touch (like pushing a friend on a swing) or other happen over a distance (such as a magnet drawing a paperclip closer). Objects only move when there is a force acting on them.

The osprey carrying the fish has more mass (weighs more) than the osprey that is not taking a fish back to the nest. When something has more mass, gravity has more of an effect on it. Gravity works from a distance, so even though the osprey is not touching the ground, it is still affected by gravity. Annie can observe the motion of the birds and compare the movements.

The reason that Heidi cannot keep the ball in the air and it keeps falling back down to Earth is because of gravity. NASA explains what gravity is, "Why do things fall when you throw them or drop them? The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall." It is because of this that the ball returns to Earth and does not stay in the air.

When a player takes a full swing and hits a baseball, they are applying a significant amount of force to the ball and changing the direction and speed of the ball. A bunt is not a full swing, and there is less force applied. When less energy is applied to an object, its motion will not be less than an object that is hit with a greater force.

The motion of the swing changed because the force being applied changed. When DJ was pushing his brother, he was applying force to the swing changing its motion, speed, and direction. When he stopped pushing, the energy was removed, and there was nothing to keep the swing moving. Eventually, the swing came to a stop, and it will not start moving again unless another force is applied to it.