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Scientific Method - Task Cards - pt 3

Last updated 7 months ago
14 questions

Water in the Window


Ben observed that puddles outside seem to disappear more quickly when it is a sunny day.

He decided to test this by setting up an experiment in which he placed a graduated cylinder with 10 ml of water in a dark closet and a graduated cylinder with 10 ml of water by the window. Each day he measured the amount of water. His data is shown below.


1

What is a testable question this experiment would answer?

1

What is the independent variable?

1

What is the difference between volume of water in the windowsill on Day 4 and the volume of water in the closet on Day 4?

3
Based on the data, what can you conclude?

Based on the data, the __________ evaporated more by day 4 because __________ left in the graduated cylinder. Therefore, water will evaporate faster on __________ days.
1

What is one constant or controlled variable?

Electromagnets


Kate made an electromagnet with 15 coils that picked up 4 paperclips. She wondered if using a thicker wire would make the electromagnet stronger.

Kate’s Plan:

1. Wrap a thin wire around a nail 15 times and connect to a battery. Count how many paperclips the electromagnet attracts.

2. Wrap a thick wire around a nail 15 times and connect to a battery. Count how many paperclips the electromagnet attracts.

1

What is a testable question this experiment would answer?

1

What is the independent variable in this experiment?

1

What are the dependent variables in this experiment?

2
Based on the data collected, the __________ attracted more paperclips which indicates that __________

Rust


Dominique designed an experiment to test the following question:
Which liquid will corrode rust from a nail the fastest?

Dominique decided to test apple cider vinegar, hydrochloric acid, and a salt and lemon juice solution to determine which liquid breaks down rust the fastest.

Dominique’s Plan:

1. Pour 300 ml of apple cider vinegar into a glass beaker. Pour 300 ml of hydrochloric acid into a glass beaker. Pour 300 ml of a salt and lemon juice solution in a glass beaker.

2. Use 3 nails with the same amount of rust. Place 1 in each beaker.

3. Start the timer and record how long it takes for the rust to corrode on each nail.
1

Identify 2 safety tools that Dominique should use when conducting this experiment.

1

If Dominique were to add an additional step after step 3, what should it be?

1

What is one thing Dominique could be more specific in Step 1 of her plan?

1

Identify the independent variable in this experiment.

1

Identify the dependent variable in this experiment.