2017 Sci OST Questions

In this picture, the dots show where a toy car is at certain times. Which statement correctly describes the motion of the toy car?

• It is standing still.

• It is speeding up.

• It is slowing down.

• It is moving at a constant speed.

A student models the motions of the sun and Earth to understand why the sun appears to move across the sky from sunrise to sunset. In this model, the student represents Earth and a light represents the sun. Which model demonstrates this appearance of the sun moving across the sky?

• the student holding the light at arm’s length and turning in a circle

• the student walking around in a wide circle while the light sits on a desk

• the student spinning around in place while the light sits on a desk nearby

• the student standing and the light being moved over the student’s head

Tags

NGSS.MS-ESS1-1

An ant crawls up a table leg from point X to the top of the table to point Y. Then it crawls across the tabletop to point Z. The graph lines show that each square measures 50 centimeters (cm) in length. It took the ant 2 minutes (min) to walk from point X, all the way to point Z. What was the average speed of the ant?

• 4 cm per min

• 25 cm per min

• 100 cm per min

• 200 cm per min

Tags

NGSS.MS-PS3-1

While a day on Earth is always 24 hours, the amount of daylight per day changes with the seasons. Estimate the relative number of daylight hours in each season in Ohio.

Groups:

(a) 15 Hours of Day light

,

(b) 12 Hours of Daylight

,

(c) 9 Hours of Daylight

• Fall

• Summer

• Winter

• Spring

Tags

NGSS.MS-ESS1-1

A student observes the position of the sun at three specific times of day during all four seasons. She stands in a field facing south (S) and draws the position of the sun in the sky in the morning, afternoon, and in the evening. At which time would the sun appear lowest in the sky and in the east?

• Spring at 9 a.m.

• Summer at 5 p.m.

• Winter at 9 a.m.

• Fall at 1 p.m.

• Winter at 5 p.m.

Tags

NGSS.MS-ESS1-1

A student investigates the pitch of sound with identical water glasses containing different amounts of water. Different pitches are created by tapping on the rim of each glass. The vibration rate of each sound is measured and recorded in a table. The student wants the pitch of sound for Glass D to be lower than the pitch of sound for Glass A.

According to the student's data, how much water goes in Glass D so it will have a lower pitch than Glass A?

• 120 mL

• 180 mL

• 240 mL

• 60 mL

Tags

NGSS.MS-PS4-1

Design an experiment to test how MASS can change the motion of a cart.

Use the following guidelines:

- Each fan has equal mass*.

- Each cart has a mass* of 2 kg.

- The mass* of each box is shown.

- A fan set on low exerts a small force on the cart.

- A fan set on medium exerts a medium force on the cart.

- A fan set on high exerts a large force on the cart.

Which of these lab setups could be used to test how mass can change the motion of a cart?

• 
• 
• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Identify whether it is day or night at point X.

• Day

• Night

Tags

NGSS.MS-ESS1-1

Describe where point X will be located in 12 hours and explain what time of day it will be.

• X will be in the same location, making it night, because Earth makes a full rotation every 12 hours.

• X will be on the opposite side of Earth and it will be sunrise.

• X will be on the opposite side of Earth and it will be sunset.

• X will be on the opposite side of Earth and it will be the middle of the day.

Tags

NGSS.MS-ESS1-1

Ball X and Ball Y are identical and are on the same surface. A brief force is applied to both. If a stronger force is applied to Ball Y, will it travel more distance or less distance than X in 3 seconds?

• Ball Y will travel more distance than Ball X.

• Ball Y will travel less distance tan Ball X.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2