Variables Worksheet with science experiment scenarios for identifying independent, dependent, and control variables.

Explanation:
We need to identify the Independent Variable (IV), Dependent Variable (DV), and Control for each scenario.

Let’s go one by one:

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1. Becky’s bean experiment
She tested 3 types of liquid:
- One with Coca-Cola
- One with lemonade
- One with just water

→ She changed the *type of liquid* — that’s what she controlled/manipulated → Independent Variable
→ She measured how *high the beans grew* — that’s what she observed/measured → Dependent Variable
→ Everything else that stayed the same (e.g., same type of beans, same pot size, same light, same temperature, same amount of liquid given, etc.) are Controls

So:
a. Independent Variable (IV): Type of liquid (Coca-Cola, lemonade, water)
b. Dependent Variable (DV): Height the beans grew
c. Control: Same type/age of beans, same pot size, same light, same temperature, same amount of liquid per day, etc.

But since the question asks to *write down* only the variables, and the answer format expects short phrases, we’ll use concise versions.

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2. Jason’s fertilizer experiment
He used three groups:
- Miracle Grow
- Scotts fertilizer
- No fertilizer (control group)

→ He changed the *type of fertilizer* → IV
→ He measured *how many baskets they grew* → DV
→ Controls: Same plant type, same soil, same light, same water, same pot size, same time period, etc.

So:
a. IV: Type of fertilizer (Miracle Grow, Scotts, none)
b. DV: Number of baskets grown
c. Control: Same plant species, same growing conditions (light, water, soil, pot), etc.

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3. Shania’s apple-eating experiment
She ate different numbers of apples on different days:
- Day 1: 0 apples
- Day 2: 1 apple
- Day 3: 2 apples
- Day 4: 3 apples

→ She changed the *number of apples eaten* → IV
→ She recorded her *science test grades* → DV
→ Controls: Same test, same study habits (she said “on her science work”), same time of day, same sleep, etc. (anything kept constant)

So:
a. IV: Number of apples eaten
b. DV: Science test grade
c. Control: Same test, same studying routine, same sleep, etc.

Note: This is a flawed experiment (correlation ≠ causation), but for the worksheet, we just identify variables as described.

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4. Rawlwon’s music & basketball experiment
He played different music types on different days and counted baskets made:
- Day 1: No music
- Day 2: Rap music
- Day 3: Classical music

→ He changed the *type of music* → IV
→ He measured *number of baskets made* → DV
→ Controls: Same player (himself), same hoop, same ball, same time of day, same number of attempts, same practice before, etc.

So:
a. IV: Type of music (none, rap, classical)
b. DV: Number of baskets made
c. Control: Same player, same hoop, same ball, same number of shots attempted, same time of day, etc.

Now, let’s write the final answers in the expected format (short, clear):

Final Answer:
1. a. Type of liquid
b. Height beans grew
c. Same beans, pots, light, water amount, etc.
2. a. Type of fertilizer
b. Number of baskets grown
c. Same plants, soil, light, water, etc.
3. a. Number of apples eaten
b. Science test grade
c. Same test, same study routine, same sleep, etc.
4. a. Type of music
b. Number of baskets made
c. Same player, hoop, ball, number of shots, time of day, etc.