6-8 Review Part E

A student conducted an experiment on plant growth that required adding about one cupful of liquid fertilizer to several plants each week. In order to accurately measure the fertilizer given to each plant, the fertilizer volume should be measured in ____.

• cubic meters

• milliliters

• cubic feet

• kiloliters

A new medication dissolves blood clots. However, if too much is used, excessive bleeding occurs. Which method should scientists use to determine the best dosage of this new medication?

• Use people of many different ages as test subjects

• Have the test subjects eat a wide variety of foods with the medication

• Change the times the medication is given to determine if timing affects bleeding

• Vary only the dosages of the medication while keeping everything else constant

Tags

NGSS.HS-LS1-3

As a supplement to some diets, iron is taken in tablet form. The mass of iron in these tables is often measured in ___.

• milliliters

• calories

• centimeters

• milligrams

This flashlight uses three different forms of energy. Which of these shows the energy changes in the correct order?

• Mechanical to Heat to Chemical

• Heat to Chemical to Light

• Electrical to Mechanical to Chemical

• Chemical to Electrical to Light

Which of these will cause water to change to ice?

• Removing heat from the water

• Stirring the water

• Adding salt to the water

• Putting the water in the sunlight

Tags

NGSS.MS-PS1-4

A car manufacturer reduces the mass of a car by 250 kg. If the new design is otherwise identical to the old design, how will the new car compare to the old car?

• It will have a greater gravitational attraction to the road.

• It will require more fuel to operate.

• It will need less force to move.

• It will release more gas emissions.

Tags

NGSS.MS-PS2-2

Most of the water in the air comes from ___.

• precipitation

• condensation

• evaporation

• transpiration

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

In 1500, between 60 million and 125 million American bison roamed the plains. These bison were used by Native Americans as a primary food source, but this did not have much effect on the bison population. A few hundred years later, railroad crews and settlers moving west also depended on the bison for food. By 1892, it is estimated that less than 1,000 bison were left. What were the two main causes of the near-extinction of the bison?

• Disease and overhunting

• Loss of habitat and disease

• Overhunting and loss of habitat

• Loss of habitat and starvation

Tags

NGSS.MS-LS2-4

Which of these best enables this animal to rid its body of excess heat in a hot desert environment?

• Its large ears

• Its flexible feet

• Its sandy color

• Its fur

Which of these illustrates a predator-prey relationship?

• An eagle catching a fish

• A flea feeding on a dog

• A horse eating grass

• A rooster fighting another rooster

Tags

NGSS.MS-LS2-4