Unit 1 Concept 1 and 2 Pop Quiz

When designing and experiment, scientists will test a relationship between a "cause" and an "effect." The "effect," also represented by what the scientist measures and records, is known as the:

• Dependent variable

• Constant

• Independent Variable

• Control Group

Ada and Elijah have decided to do an experiment testing how sunlight affects plant growth. The students choose the same type of plants, soil, pots and amount of water they give the plants. They also make sure each plant is put in their designated area for the same amount of time each day. One plant is placed outside; one in front of a window that only gets light for 1/2 the day, and one in a closet. The students collect data every day for two weeks. Their results show that the plant outside grew the most and the plant in the closet had the least amount of growth.

What are the constant variables that Ada and Elijah used in their experiment?

• Types of plants

• Type of soil

• The amount of light

• A and B

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Identify the independent and dependent variables in the hypothesis below:

If students eat a high-protein breakfast, then they will score higher on their biology test.

When leaving a movie theater, a person notices that the sidewalk is now wet. If the person assumes it rained during the movie, the person is making:

• a hypothesis

• an inference

• an observation

• a prediction

In a hypothesis the __________________ variable is what is being tested, while the _________________ variable is the one being measured in response.

• control, dependent

• independent, control

• dependent, independent

• independent, dependent

Tags

NGSS.MS-PS2-2

Five students each used the same ruler to measure the length of the same pencil. Their measurements were: 15.33 cm, 15.34 cm, 15.33 cm, 15.33 cm, 15.34 cm. The actual length of the pencil was 15.85 cm. Explain whether the students’ measurements were accurate, precise, both, or neither.

When placed in water, oil does not dissolve and stays separate. This means oil is and .

• hydrophilic and polar

• hydrophilic and nonpolar

• hydrophobic and polar

• hydrophobic and nonpolar

Water is awesome. Defend this claim with evidence and reasoning by describing one of its properties that makes it awesome.

The attraction between molecules of the SAME type is

• adhesion

• specific heat

• hydrophobic

• cohesion

What must be considered when designing a solution for a problem with technology?

• Cost

• Time

• Materials

• All of the above

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2