2019 Sci OST Questions

A teacher is pushing a cart filled with books down a hallway with a wooden floor. Which change would help the teacher move the cart more easily?

• putting fewer books in the cart

• removing the wheels from the cart

• carrying the cart instead of rolling it

• laying carpet over the wooden floor

Tags

NGSS.MS-PS2-2

The diagram shows three celestial objects and the orbital paths of two of the objects.

Which correctly identifies the objects in the diagram?

• Object X - Planet

  Object Y - Moon

  Object Z - Comet

• Object X - Sun

  Object Y - Planet

  Object Z - Moon

• Object X - Planet

  Object Y - Moon

  Object Z - Planet

• Object X - Planet

  Object Y - Comet

  Object Z - Moon

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

The table shows the actual sizes of four stars and how bright each star appears from Earth.

Which star from the table could be the sun?

• star 1

• star 2

• star 3

• star 4

Tags

NGSS.MS-ESS1-3

The table shows the source of energy for some organisms in a food web.

Which organisms use photosynthesis as a source of energy?

• Sparrow and fungi

• Dandelion and fungi

• Grass and dandelion

• Caterpillar and cricket

Tags

NGSS.MS-LS1-6

A student takes a picture of the sky from her window once during the day and once again at night.

Why do the sun and the moon appear to be the same size in the pictures?

• The sun and the moon have the same diameter.

• The sun and the moon are the same distance from Earth.

• Although the moon is larger, it is farther away than the sun.

• Although the sun is larger, it is farther away than the moon.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

In Ohio, swarms of cicadas hatch from the ground every 17 years. When the cicada population appears, the populations of moles and wild turkeys increase.

Part A: Which organism goes in each of the blank boxes in the food web to show the flow of energy?

• 1 Wild Turkey

  2 Cicadas

  3 Plants/Tree

• 1 Plants/Trees

  2 Cicada

  3 Wild Turkey

• 1 Plants/Trees

  2 Wild Turkey

  3 Cicada

• 1 Cicada

  2 Plants/Trees

  3 Wild Turkey

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

In Ohio, swarms of cicadas hatch from the ground every 17 years. When the cicada population appears, the populations of moles and wild turkeys increase.

Part B: What role that cicadas play in the food web?

• Carnivore

• Herbivore

• Omnivore

Which motion causes the change from day to night on Earth?

• Earth orbiting the sun

• the moon orbiting Earth

• Earth rotating on its axis

• the moon rotating on its axis

Tags

NGSS.MS-ESS1-1

Students are observing the highest pitches that different instruments can reach. The higher the instruments’ pitch, the higher the mark on the graph. Drag each instrument so that they are in order from the fastest to slowest vibration rate.

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Students design toy cars and then race them against each other. They record the following measurements during the competition: Distance traveled, Weight of car, Time traveled, Volume of car.

What should students do to calculate the average speed of each toy car?

• Divide the weight of each car by its volume.

• Divide the volume of each toy car by its weight.

• Divide the distance traveled by each toy car by the time traveled.

• Divide the time traveled by each toy car by the distance traveled.