GR7 Science Practice Items

A damaged hip joint can cause pain and decreased mobility. A hip replacement can restore mobility and reduce pain. During hip replacement surgery a portion of the damaged bone is removed and replaced with a man-made material.

Which of these describes a material that is best to use for a hip replacement?

• a soft material that bends with the movement of the body

• a mesh material that allows fluid in the body to pass through it

• a hard metal material that supports the weight of the body

• a solid dissolvable material that disappears after the body heals

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

The graph shows atmospheric CO2 levels over time. Which activity most likely contributed to the changes in atmospheric CO2 levels after the year 1800?

• transforming vacant lots into parks and recreational areas

• growing seasonal produce in community gardens

• driving electric vehicles with low emissions

• producing goods in large factories

Tags

NGSS.MS-ESS3-4

A sample of pure cesium (Cs) reacts with water. Under standard conditions, which of these elements react in a similar way to water as cesium (Cs)?

• silicon (Si)

• neon (Ne)

• potassium (K)

• iridium (Ir)

Tags

NGSS.MS-PS1-2

Gold jewelry can be made in different colors. The difference in color depends on the percentage of each metal within the jewelry. Which type of gold is a pure substance?

• Rose Gold

• White Gold

• 18K Gold

• 24K Gold

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

A group of students investigated how cycling of matter occurs in plants and animals. Their setup and data are shown. If CO2 lowers the pH of water, which statement best explains the processes that occurred in the beaker?

• The aquatic plant released CO2 that the snail used to make sugars.

• The water pH lowered as CO2 was consumed by the aquatic plant.

• The snail breathed in CO2 from the water.

• The snail released CO2 into the water.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The model shows a pure substance in a glass jar undergoing a change of state. Based on the model, the changes observed are most likely caused by:

• a decrease in the total mass of the substance under the glass jar without a change in temperature or pressure.

• an increase in the temperature of the substance without a change in pressure.

• a decrease in the temperature of the substance without a change in pressure.

• an increase in the atmospheric pressure outside the glass jar without a change in temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which table best describes both mitosis and meiosis?

• Process:

  Mitosis - One cell becomes four cells. - Genetically identical; Meiosis - One cell becomes two cells. - Genetically different.

• Process:

  Mitosis - One cell becomes four cells. - Genetically different; Meiosis - One cell becomes two cells. - Genetically different.

• Process:

  Mitosis - One cell becomes two cells. - Genetically identical; Meiosis - One cell becomes four cells. - Genetically different.

• Process:

  Mitosis - One cell becomes two cells. - Genetically identical; Meiosis - One cell becomes four cells. - Genetically identical.

Tags

NGSS.MS-LS3-2

The graph shows the boiling points of three elements in Group 17 of the periodic table. Which point on the graph best predicts the boiling point of chlorine, Cl₂?

• point W

• point X

• point Y

• point Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Based on Figure 2, what type of movement do the particles exhibit at room temperature?

• Low movement

• Medium movement

• High movement

Tags

NGSS.MS-PS1-4

What is the role of mosses in the tundra ecosystem?

• Producer

• Consumer

• Decomposer

• Scavenger

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6