Practice of Science

Variable measured during the experiment

• Independent Variable

• Dependent Variable

Tags

NGSS.MS-PS2-2

Information that is obtained through observation or experimentation.

• empirical evidence

• observation

• prediction

• hypothesis

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NGSS.MS-PS1-2

NGSS.MS-PS2-5

An experiment was designed to determine the effect of fertilizer on plant growth. Two groups of plants were grown under identical conditions except one group was watered with a dilute fertilizer solution and one was received water without fertilizer. The group of plants without the fertilizer is known as the

• abiotic factor

• control

• variable

Tags

NGSS.MS-LS2-1

An idea or explanation that can be studied or tested

• Analyze

• Hypothesis

• Evidence

• Qualitative Data

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NGSS.HS-LS1-3

NGSS.HS-LS2-3

NGSS.HS-PS1-2

Andre planted wheatgrass in three different types of soil to see which one was the best for growing wheatgrass. Miguel and Darla decided to do the same experiment to see if they would get the same results.

What is this called?

• Repetition

• Replication

• Reptiliation

• Reposition

Tom is creating an experiment to see what food his pet lizard likes the best. He creates an experiment in which he offers his lizard a choice of crickets or mealworms. He records how much of each choice is eaten each day. At the end of two weeks, Tom finds the lizard has eaten a few more mealworms than crickets. What is the independent variable?

• type of food

• type of lizard

• how much the lizard ate

• which food the lizard liked best

Tags

NGSS.MS-ETS1-1

NGSS.MS-LS2-1

Thomas and Julie wanted to find out which material would insulate their teacher's coffee cup and keep the coffee hot for the longest period of time. They first wrapped her cup with bubble wrap and recorded the temperature of the coffee once every 15 minutes for 2 hours. They repeated the investigation, this time using newspaper instead of bubble wrap, but they got the same results for both materials. What is the dependent variable?

• the materials wrapped around the cup

• the temperature of the coffee

• the amount of material wrapped around the cup

• amount of coffee

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is when a scientist does their experiment multiple times?

• repetition

• replication

• experimental method

• controlled variable

A scientist is conducting a study for a petroleum company to locate oil trapped in layers of a rock called shale buried underground, what would be the best method for them to use?

• Compare rock samples collected over the past 100 years to determine how oil deposits have changed over time

• Create a survey asking other geologist where they have previously located oil in the US

• Examine charts of rock layers to identify areas that contain shale and drill in that area

• Complete an experiment that tests what types of rocks contain oil

Tags

NGSS.MS-ESS3-1

Which of the following correctly identifies the type of investigation and its description?

•  It's an experimental investigation because it includes collecting data.

• It's a comparative investigation because multiple trials are being conducted

• It's an experimental investigation because it includes controlled variables

• It's an observational investigation because data is being analyzed