Eighth Grade Milestone

Deposition of sediments can change the depth of a lake over time. A student wants to make a model that shows how this process takes place. Which model would provide data about changes in the depth of a lake caused by deposition?

• Fill a beaker with water. Slowly allow the water to evaporate from the beaker. Measure the change in

  the depth of the water.

• Fill a beaker with water. Slowly drop sand, gravel, and dead plant material into the beaker. Measure

  the change in the depth of the water.

• Fill a plastic box with water. Put a hose in the water on one end of the box and turn the water on to a

  slow flow. Measure the depth of the water when the box is full.

• Fill a plastic box with sand, gravel, and dead plant material. Put a hose in the middle of the box and

  turn the water on to a slow flow. Measure the depth of the water when the box is full.

Tags

NGSS.MS-ESS2-2

The changes in the Azure Window were cause by the _____ process of _____.

• destructive process of erosion

• destructive process of deposition

• constructive process of erosion

• constructive process of deposition

Tags

NGSS.MS-ESS2-2

• The student’s claim is correct because water fills small cracks in rocks, freezes, and expands, making the cracks larger over time.

• The student’s claim is correct because the rock was carried from the top of the volcano to its base by a glacier, creating many cracks over time.

• The student’s claim is not correct because the rock was picked up by moving water and rolled against

  other rocks, smoothing its surface and causing cracks in a short period of time.

• The student’s claim is not correct because large cracks in rocks are caused when lava from a volcano

  covers the rock so its temperature rises and falls in a short period of time, causing it to break.

Tags

NGSS.MS-ESS2-2

• How fast are the cliffs eroding?

• How many people live near cliffs?

• How old are rock layers at the bottom of the cliff?

• How can people stop the erosion of cliffs near the coast?

Tags

NGSS.MS-ESS2-2

A student is studying the formation of the Himalayas. The student finds a picture and learns that the mountain range formed when the Indian Plate collided with the Eurasian Plate. The student uses a picture to design a model that will show classmates how the Himalayas formed.

step 1: Use light-colored clay to make the shape of the Eurasian Plate.

step 2: Use dark-colored clay to make the shape of the Indian Plate.

step 3: Slowly push the dark-colored plate toward the light-colored plate.

step 4: Observe and record how the shapes of both plates change when the edges push against each other.

Which data could the student collect using the BEST model from the steps?

• the changing distance between the two plates

• the time it takes for the two plates to collide

• the mass of the materials used to make the two plates

• the changing height of the edge where the two plates collide

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What is a parallel circuit? 

• A circuit with only one path to get electricity to the light

• A circuit without any paths to get electricity to the light

• A circuit with multiple paths to get electricity to the light

• I never knew there was such a thing as a parallel circuit 

the function of the mitochondria is ____________?

• make food for the cell

• convert food into energy for the cell

• allow other organelles to move around freely

• control all other organelles

Tags

NGSS.MS-LS1-2

Which of the following best describes the process of photosynthesis?

• A) Conversion of light energy into chemical energy by plants

• B) Breakdown of glucose into energy in animal cells

• C) Absorption of nutrients from the soil by plant roots

• D) Exchange of gases between the atmosphere and the ocean

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary function of the roots in a plant?

• A) To produce flowers

• B) To absorb water and nutrients

• C) To perform photosynthesis

• D) To release oxygen into the air

Tags

NGSS.MS-LS2-1

Which of the following is an example of a chemical change?

• A) Melting of ice

• B) Boiling of water

• C) Rusting of iron

• D) Breaking of glass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5