Ecology SOL Unit 1.4 - Variables

__ is the variable set aside to compare other test results you obtain.

• Control

• Independent

• Dependent

• Trials

Answer explanation

The 'Control' variable is used as a standard for comparison in experiments. It remains unchanged while other variables are tested, allowing researchers to determine the effect of the independent variable on the dependent variable.

__ is the part of an experiment that remains the same (unchanged) throughout the experiment.

• Constant

• Variable

• Control

• Trials

Answer explanation

In an experiment, a 'Constant' refers to the part that remains unchanged throughout, ensuring that any observed effects are due to the variables being tested. This stability is crucial for valid results.

___ are what is repeated multiple times in the same step in an experiment to make your data more reliable.

• Trials

• Variables

• Constants

• Controls

Answer explanation

Trials are repetitions of the same step in an experiment, which help ensure that the data collected is reliable and accurate. This is essential for validating results and drawing meaningful conclusions.

___ are the parts of an experiment that you change or are caused to change the experiment.

• Variables

• Constants

• Controls

• Trials

Answer explanation

Variables are the parts of an experiment that can be changed or manipulated to observe their effects. They are essential for testing hypotheses, unlike constants, controls, and trials, which serve different roles in an experiment.

__ is the variable that is intentionally altered by the experimenter in an experiment to see how it affects other variables.

• An independent variable

• A dependent

• A control

• A constant

Answer explanation

The independent variable is the one that the experimenter changes to observe its effect on other variables. In contrast, dependent variables are affected by changes in the independent variable, while controls and constants remain unchanged.

Tags

NGSS.MS-PS2-2

__ is the variable that changes as a result of the intentional changing of another variable in an experiment.

• A dependent

• An independent

• A control

• A constant

Answer explanation

The dependent variable is the one that changes in response to the manipulation of the independent variable. In experiments, it is measured to assess the effect of the independent variable, making 'A dependent' the correct choice.

__ data is collected in an experiment by measuring or counting. It is reported in numbers.

• Quantitative

• Qualitative

• Variable

Answer explanation

Quantitative data is numerical and obtained through measurement or counting, making it distinct from qualitative data, which is descriptive. Therefore, the correct answer is 'Quantitative'.

Tags

NGSS.MS-PS3-1

__ data is collected in an experiment by describing, mainly collected using your five senses.

• Qualitative

• Quantitative

• Control

• Variable

Answer explanation

Qualitative data is gathered through observations using the five senses, focusing on descriptions and qualities rather than numerical measurements. This makes 'qualitative' the correct choice for the type of data described.

Tags

NGSS.MS-LS1-8

Nick wanted to see how high an ice cube would float in different temperatures of water. What would be the dependent variable?

• Amount of water

• Temperature of water

• Size of ice cube

• Height of ice cube

Answer explanation

The dependent variable is what is measured in an experiment. In this case, Nick is measuring how high the ice cube floats, making the 'height of ice cube' the correct choice.

Tags

NGSS.MS-PS3-4

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is __.

• The type of plant

• The amount of sunlight

• The type of music

• The type of liquid

Answer explanation

In this experiment, the independent variable is the type of liquid given to each plant (water, apple juice, or milk), as it is the factor being changed to observe its effect on plant growth.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1