Sabrina wants to test which brand of popcorn pops the most kernels. She picked a store brand, Orville Redenbacher, and PopSecret. All three bags started with the same number of kernels. She popped each for 3 minutes in the same microwave, and then counted the number of kernels left over. What is her independent variable?

number of kernels before popping

What is an observation?

Using your senses to notice what is going on around you

A scientific statement based on ideas

A prediction of what will happen in the future

What is a dependent variable?

the variable that the scientist measures

the variable that causes the change

the variable that remains the same

the variable that is changed on purpose

What is a control group in an experiment?

a group in an experiment that remains unchanged for purpose of comparison

a group in an experiment that changes to compare the IV and DV variables

Which of the following is a quantitative observation?

The bird has 4 different colors on him.

The bird has many, many feathers.

What is a qualitative observation about this image?

There is art created from trees in this photo.

There are 10 mini trees in the picture.

There are two color bushes in the picture.

There is one power line going across in the air.

What is the first step in the scientific method?

Ask a question or state a problem

Design and conduct an experiment

This step should be done more than once to ensure accurate results

Clean up after your investigation

This is the last step in the scientific method

Share what you have learned with others

Research Question: Does the distance a person kicks a soccer ball effect how well they will do on their math test. What is the dependent variable?

How well they do on the math test

How far they kick the soccer ball

Research Question: Does the type of gasoline put in a car effect how fast the car can drive? What is the independent variable?

how much gas is put into the car

Why do we want to test one variable at a time?

To know if it is causing the changes

Because it is hard to setup a data table with more

It is what has always been done

Basic Science Skills

Authored by Hope Campbell

Biology

7th Grade

NGSS covered

Used 248+ times

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53 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

I saw a black dog running in the park.

Quantitative Observation

Qualitative Observation

Inference

Prediction

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which tool would be best to measure the mass?

beaker

electronic balance

ruler

measuring cup

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The space that something takes up...

Density

Distance

Mass

Volume

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The amount of matter in an object...

Distance

Mass

Time

Volume

What is this tool called and what would it be used to measure?

Meter stick and distance

Meter stick and mass

beaker and volume

graduated cylinder and volume

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is this tool called and what would it measure?

Beaker, volume

Graduated Cylinder, volume

Flask, mass

Ruler, distance

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is this tool called and what does it measure?

Beaker, volume

Flask, mass

Graduated Cylinder, volume

Measuring Cup, mass

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Basic Science Skills

I saw a black dog running in the park.

Which tool would be best to measure the mass?

The space that something takes up...

The amount of matter in an object...

What is this tool called and what would it be used to measure?

What is this tool called and what would it measure?

What is this tool called and what does it measure?

The base unit for mass is the

The base unit for volume is the

The base unit for length is the _____________.

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