Physical Science Units 1 & 2 Test Review

A possible explanation for a scientific observation or problem based on previous knowledge and experience is a(n)....

• question

• hypothesis

• qualitative observation

• independent variable

A scientist monitors the temperature of a solution during a chemical reaction. She finds that the average temperature of the solution is 76 degrees Celsius. Is average temperature an example of qualitative or quantitative data?

• Qualitative data

• Quantitative data

The group of subjects in an experiment that receive normal conditions is known as the...

• the experimental group

• the control group

• the dependent variable

• the independent variable

Read the following scenario: "The owner of a plant nursery read in a gardening magazine that certain flowers, like lavender, grow better in sandy soil. Although he usually only grows flowers in top soil, he decides to test this idea. He plants 3 lavender bulbs in sandy soil and 3 lavender bulbs in top soil. The plants are then placed in a sunny spot in the same section of the greenhouse. Several weeks later, nursery owner measures the growth of his lavender plants. The plants grown in sandy soil are taller and healthier than the plants grown in top soil." What is the independent variable in this experiment?

• the location in the greenhouse

• the height and health of the plants

• the number of bulbs

• the type of soil

Read the following scenario: "The owner of a plant nursery read in a gardening magazine that certain flowers, like lavender, grow better in sandy soil. Although he usually only grows flowers in top soil, he decides to test this idea. He plants 3 lavender bulbs in sandy soil and 3 lavender bulbs in top soil. The plants are then placed in a sunny spot in the same section of the greenhouse. Several weeks later, nursery owner measures the growth of his lavender plants. The plants grown in sandy soil are taller and healthier than the plants grown in top soil." What is a constant in this experiment?

• the height and health of the plants

• the type of soil

• the location in the greenhouse

• the growth of the plants

The SI System is also called the...

• Imperial System

• Metric System

• European System

• American System

The SI base unit for length is the...

• liter

• meter

• gram

• second

1 mL of liquid volume is equal to _______ of solid volume.

• 1 gram

• 1 m³

• 1 cm³

• 1 gallon

The SI unit for mass is...

• meter

• liter

• second

• gram

What does the SI prefix "hecta-" mean?

• 1/100

• 1/10

• 10

• 100