Scientific Method Steps
Independent (IV) and Dependent (DV) Variables
Decomposition & Composting
Abiotic vs. Biotic
100

What’s the first step in the scientific method?

Observation

100

You test if plants grow faster with music. What is the independent variable?

Music or no music
100

What breaks down dead stuff in compost?

Decomposers

100

Is a tree abiotic or biotic?

Biotic

200

What do we call an educated guess you can test?

A Hypothesis

200

You test if colder water freezes faster. What is the dependent variable?

time to freeze

200

Is a banana peel compostable?

Yes

200

Is sunlight abiotic or biotic?

Abiotic

300

What comes after you do the experiment?

Analyze Results
300

You test if the color of light affects plant height. What is the IV and DV?

IV: Light color | DV: Plant height

300

What is one thing that helps decomposition go faster?

warmth, moisture, air, or other answers at the teacher's discretion 

300

Which one means non-living: abiotic or biotic?

Abiotic

400

What is one way you can communicate the results of your experiment?

Create a lab report, or other answers at the teachers discretion

400

You test how long different materials take to decompose. What’s the IV and DV?

IV: Material type | DV: Time to decompose

400

What’s one example of a decomposer?

Fungus, bacteria, worms, or something else at the teachers discretion

400

A rabbit, a rock, and a river: which is biotic?

Rabbit

500

What step involves actually doing the experiment?

Conduct Experiment

500

You give one group of students chewing gum and another group mints, then measure focus. IV? DV?

IV: Gum vs. mints | DV: Focus level

500

True or False: A plastic spoon will decompose in compost.

False

500

List 2 biotic and 2 abiotic things

Open ended: at teachers discretion