24-25 Midterm Exam Review Unit 1 & 2

Front

What is a dependent variable in an experiment?

Back

The dependent variable is the variable that is measured or observed in an experiment, which is affected by changes in the independent variable. For example, in a plant growth experiment, the dependent variable is the growth of the plants.

Front

What is the purpose of control variables in an experiment?

Back

Control variables are the factors that are kept constant throughout an experiment to ensure that the results are valid and reliable. They help isolate the effect of the independent variable on the dependent variable.

Front

How do you convert milliliters to cups?

Back

To convert milliliters to cups, use the conversion factors: 30mL = 1oz and 8oz = 1cup. For example, to convert 70mL to cups, first convert to ounces (70mL ÷ 30mL/oz = 2.33oz), then convert to cups (2.33oz ÷ 8oz/cup = 0.29 cups).

Front

What does the Y-axis represent in a graph?

Back

The Y-axis represents the dependent variable in a graph, which is the variable being measured or tested.

Front

What does it mean if an object is moving at a constant speed?

Back

If an object is moving at a constant speed, it means that the object covers equal distances in equal intervals of time without speeding up or slowing down.

Front

What is an independent variable?

Back

The independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

What is the significance of a fair experiment?

Back

A fair experiment is one where all variables except the independent variable are kept constant, ensuring that the results are due to the manipulation of the independent variable.

Front

What is the difference between acceleration and deceleration?

Back

Acceleration is the rate of change of velocity of an object, indicating an increase in speed, while deceleration is a decrease in speed or negative acceleration.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables, often formulated as an if-then statement.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge, typically involving observation, hypothesis formulation, experimentation, and conclusion.