Changes in Position and Motion

Jim is testing how pushes affect objects. This picture shows what happened when Jim pushed on a box. Which picture shows what would happen to the box if Jim pushed with more force?

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Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Elise wants to show how an object can change position by pulling it. Which action should she do?

• use a pulley to raise a flag

• roll a ball across the floor

• hand a book over to a friend

• use her arm to raise her hand

Tags

NGSS.K-PS2-1

NGSS.K-PS2-2

Students set up a ramp at four different heights and observe how much force is needed to pull a toy car up the ramp using a string. They will record their observations in a table. Which setup will need the LEAST amount of force to pull the toy car?

• 0 cm ramp

• 10 cm ramp

• 15 cm ramp

• 20 cm ramp

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Students fill a cart with books to test how pushes and pulls will change how it moves. The cart has a handle at each end. Student 2 will push on the cart. Student 1 will pull on the cart. Which direction will the cart move? Choose ONE correct answer.

• left (towards student 1)

• right (towards student 2)

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

The pictures show people testing how objects change by pushes or pulls. Why do the objects move forward? Write the letter of ONE correct word on each line to correctly complete the explanations. Each word may be used more than once. Amella ​ (a)   on the bow string and lets go. The bow string ​ (b)   on the arrow, and the arrow moves forward. Hector ​ (c)   his feet on the ice, and his body moves forward. The hockey stick ​ (d)   on the puck, and the puck moves forward.

​

• pulls
• pushes

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Kedar and Lilia are designing an investigation to see how forces change the motion and position of pieces of toasted oat cereal. They get five pieces of toasted oat cereal, yarn, a pencil, and two straws. Kedar sits across the table from Lilia. He tries different forces on the cereal. How will each action move the cereal? Write the letter of each answer in the correct box.

Groups:

(a) Toward Lilia

,

(b) Toward Kedar

• pulling the oat cereal with a finger

• pushing the oat cereal with a pencil

• sucking through a straw toward the oat cereal

• tying a string to the oat cereal and pulling

• blowing on the oat cereal through a straw

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

A student is experimenting with two toy cars to find out which one is faster. The student will start each car at a starting point on a track at equal distances from the finish line. Evaluate the experimental design in the picture to make a valid conclusion. Which change will improve the design?

• moving the finish line

• making both tracks flat

• making the cars bigger

• shortening one of the tracks

Tags

NGSS.3-5-ETS1-1

NGSS.3-5-ETS1-3

NGSS.3-PS2-1

NGSS.3-PS2-2

Which investigation might be planned to demonstrate how position can be changed by pushing objects?

• place a wagon on a sidewalk and observe it for two minutes

• pull a wagon and time how long it takes to reach the end of the sidewalk

• push a wagon and measure how many meters it moves in one minute

• compare the time it takes you and a classmate to each push a wagon 10 meters

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

​ (a)   is an object's location, in relation to a nearby plack or object.

• Position
• Force
• Motion

​ ​ (a)   is the change in an object's position.

• Motion
• Force
• Position

Tags

NGSS.3-PS2-2