Open Sci Ed Forceds

A push or a pull that starts, stops or changes the direction of an object

• force

• energy

• gravity

• motion

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The force that pulls things toward earth.

• Speed
• Gravity

Tags

NGSS.5-PS2-1

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

Some students wanted to find out if a tennis ball and a baseball dropped from the same height hit the ground at the same time. This investigation tests the effect of which of the following?

• wind

• friction

• gravity

• magnetism

Tags

NGSS.MS-PS2-4

Students wanted to see if the distance the marble rolled down a ramp changed the force it had. They allowed a marble to roll down the ramp from different starting points and strike a second marble. To determine if the force of the rolling marble changed, what should the students measure?

• The mass of marble #2 before and after being struck by marble #1.

• The distance marble #2 moves after being struck by marble #1.

• The time it takes marble #2 to move after being struck by marble #1.

• The direction marble #2 moves after being struck by marble #1.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If a student has two magnets, how might it be determined which magnet is stronger?

• Count how many paper clips each magnet can lift.

• Submerge each magnet in a bowl of water.

• Examine each magnet to determine the north pole.

• Measure the length and the mass of both magnets.

Tags

NGSS.3-5-ETS1-2

Students conducted an investigation in which they rolled a soda can down a ramp that was 30 cm high and one that was 40 cm high. Which question were the students most likely trying to answer?

• How does mass of a soda can affect the distance it will roll?

• How does surface friction affect the distance a soda can will roll?

• How does the size of a soda can affect the distance it rolls?

• How does ramp height affect the distance a soda can rolls?

Students conducted an investigation in which they measured the distance a toy car traveled after rolling down a ramp covered with sandpaper or wax paper. Which of these questions can the students answer by analyzing the results of their investigation?

• How does changing the height of a ramp affect the distance a toy car rolls?

• How does changing the surface of a ramp affect the distance a toy car rolls?

• How does mass affect the distance a toy car moves after rolling down a ram?

• How does the design of a toy car affect its movement after rolling down a ramp?

A student makes a swing move by pushing it. If a student pushes the swing harder, the swing will most likely---

• stop moving

• slow down

• go higher

• get bigger

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Edward kicks a soccer ball across the backfield. What force works to slow the ball down?

• pushes and pulls
• friction
• magnetism
• gravitation

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2