2018 Sci OST Questions

Four boxes are lifted straight up from the ground to a shelf. Each box has a different mass, as shown in the table. Which box requires the smallest force to lift it off the ground?

• box L

• box M

• box N

• box O

Tags

NGSS.MS-PS2-2

Students slide three different weights across a sheet of ice by giving each a brief push. Which would slide the fastest?

• Lightest Mass

• Medium Mass

• Heaviest Mass

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Students slide three different weights across a sheet of ice by giving each a brief push. If they want the masses to go the same speed, which needs the strongest relative force?

• Lightest Mass

• Medium Mass

• Heaviest Mass

Tags

NGSS.MS-PS2-2

When viewed from the Northern Hemisphere, which star appears to stay in the same place in the sky throughout the night?

• 1

• 2

• 3

• 4

What causes some stars to appear to stay in the same place, while other stars appear to move across the sky throughout a single night?

• Earth rotates on its axis.

• Earth revolves around the sun.

• Half of Earth faces away from the sun at all times.

• The length of nighttime changes as the seasons change.

Tags

NGSS.MS-ESS1-1

A student fills three identical glasses with different amounts of water as shown. She taps each one with a spoon and observes that each produces a sound with a different pitch. Which statement explains the student’s observations?

• The tapping creates different sounds that echo.

• Sound travels faster through larger amounts of water.

• The amount of water in the glass affects vibration rate.

• Some of the glasses were tapped harder with the spoon.

Tags

NGSS.MS-PS4-1

Two carts are at rest on straight, frictionless tracks. A student applies a brief force to move an empty cart on one track. A second student applies the same force for the same amount of time to an identical cart that is carrying bricks across an identical track. The force is removed when the carts cross the start line and a stopwatch starts timing. Which cart will go faster?

• The empty cart

• The cart carrying bricks

Tags

NGSS.MS-PS2-2

Two carts are at rest on straight, frictionless tracks. A student applies a brief force to move an empty cart on one track. A second student applies the same force for the same amount of time to an identical cart that is carrying bricks across an identical track. The force is removed when the carts cross the start line and a stopwatch starts timing. Which best describes the resulting motion of the cart carrying bricks?

• The cart carrying bricks will move at a constant speed.

• The cart carrying bricks will speed up over time.

• The cart carrying bricks will slow down over time.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The sun appears in different positions in the sky throughout the year. Two days when the sun is in very different positions are December 21 and June 21. On which date does the sun appear at a lower altitude in the sky in Ohio?

• December 21

• June 21

Tags

NGSS.MS-ESS1-1

The sun appears in different positions in the sky throughout the year. Two days when the sun is in very different positions are December 21 and June 21. On which date would a flag pole in Ohio have a longer shadow?

• December 21

• June 21

Tags

NGSS.MS-ESS1-1