Commonly Missed Quarterly Test 3

The table shows the properties of 4 unknown liquids. Each sample is in its own beaker. A student adds equal amounts of substance K to each beaker.

Liquid Volume Mass

W 10 50

X 25 100

Y 25 75

Z 25 150

If substance K has a known density of 4.5g/ml, in which liquids would K sink.

• W and Z

• X and Y

• W and X

• Y and Z

Lin's science fair project is on the effects of carbon dioxide levels on plant growth. Lin's hypothesis is "if more carbon dioxide is present, then the plant will grow faster."

Each test plant is placed in a clear container, and Lin exhales different amounts of carbon dioxide into the containers. She collects data every 3 days for 2 weeks and records it in a data chart, as shown below.

Based on the data from Lin's experiment, which statement supports her hypothesis?

• Increased carbon dioxide supplies more oxygen to the plant.

• Decreased carbon dioxide allows for more energy production.

• Decreased carbon dioxide supplies allows for more water consumption.

• Increased carbon dioxide supplies carbon to increase sugar production.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-7

NGSS.MS-LS2-1

A student measures the mass of a beaker containing water to be 250 grams (g). She adds

table salt to the beaker and stirs until all of the salt is dissolved and the solution is clear. How

does the addition of salt affect the mass of the beaker and its contents?

• The mass of the beaker and its contents is still 250 g.

• The mass of the beaker and its contents is now less than 250 g.

• The mass of the beaker and its contents is now greater than 250 g.

• The mass of the beaker and its contents depends on whether new atoms are formed.

Tags

NGSS.MS-PS1-5

Jupiter is the largest planet in our Solar System: it has as much mass as about 300 Earths! Venus is only slightly smaller than Earth and has about the same amount of mass as the Earth. How would Jupiter's gravity compare to that of Venus?

• Venus is more compact than Jupiter, so Venus has more gravity.

• Jupiter is more massive than Venus, so Jupiter has more gravity.

• Venus is closer to the Sun, so Venus has more gravity than Jupiter.

• Jupiter is farther from the Sun than Venus, so Jupiter has more gravity.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Isabel needs an image to represent the carbon cycle for a presentation in her science class.

She has the following diagrams to choose from.

Based on the information represented in the concept models above, which statement is true?

• Model A would be the best model for the carbon cycle because carbon depletes over

  time as it is used by different organisms.

• Model B would be the best model for the carbon cycle because carbon will follow the

  same path when it is transferred from one place to another.

• Model C would be the best model for the carbon cycle because the carbon cycle has a

  definite beginning and end where carbon eventually cannot be reused.

• Model D would be the best for the carbon cycle because the carbon cycle is a flow of

  matter which can take different paths bringing carbon back to the same place.

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

A carbon atom can take multiple forms as it travels through the carbon cycle, including being part of a carbon dioxide molecule. Which of the following statements is correct about the carbon atoms in carbon dioxide molecules?

• Carbon atoms from the carbon dioxide molecules used in photosynthesis are reused as carbon atoms in the sugar that a plant produces.

• Carbon atoms from the carbon dioxide molecules used in photosynthesis can be used a set number of times and are then removed from circulation.

• Carbon atoms from the carbon dioxide molecules used in photosynthesis are changed into oxygen atoms which the plant uses to produce glucose

• Carbon atoms from the carbon dioxide molecules used in photosynthesis are partially converted into energy, therefore reducing the mass of the carbon atoms.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The human body contains a large variety of compounds, including carbohydrates, proteins, sugars, fats, and others. However, the human body is made mostly of three elements: carbon, hydrogen, and oxygen. Which statement best explains this?

• small number of elements are arranged in a large number of ways.

• Carbon, hydrogen, and oxygen are able to change into other elements.

• There are several elements in the human body that have not been discovered yet.

• There are several elements in the human body that have not been discovered yet.

Tags

NGSS.MS-PS1-1

Terry designed an investigation to test the effect of car shape on wind resistance. He did this by comparing the speeds of four differently-shaped cars rolling on a smooth level surface immediately after having rolled down the same ramp. All four cars had the same mass and wheel structure. What was the test variable (independent variable) in this investigation?

• the height of the ramp

• the length of the ramp

• the speed of the car

• the shape of the car

Tags

NGSS.MS-PS2-2

Jeremy is trying to convince Alan that a substance that conducts heat does not necessarily

conduct electricity as well. Which of the following would be the best example for him to use to

convince Alan of this?

• a steel nail

• a paper clip

• a piece of glass

• a piece of copper wire

For a scientist, the word “theory” can have a very different meaning than for the rest of society. From the scientific point of view, what is a theory?

• A theory is a description of specific natural events

• A theory explains the dependent and independent variables.

• A theory is an explanation that cannot be refuted by additional scientific information.

• A theory is a widely accepted general explanation that has been supported with strong

  evidence.