L1.1 Introduction to STEM
L1.2/3 Method & Sources
L1.4 Variables & Hypothesis
L1.5/6 Procedure & Observations
L1.7 Data Collection & Table
Random Science Questions
100
Identify at least 3 norms of collaboration.
1. Pause 2. Paraphrase 3. Ask a question 4. Contribute new ideas 5. Provide data 6. Pay attention 7. Presume good intentions
100
Define inference
Inference: An idea that’s drawn from evidence and reasoning. An explanation for an observation made after research and critical thinking.
100
What is the dependent variable in an experiment?
The variable that changes as a result of the experiment and is observed or measured.
100
What are the 4 important components of a procedure?
1. Materials List
2. Safety Procedures
3. Step-by-Step Instructions
4. Observation Record
100
What tool would you use to measure the mass of an object?
Triple Beam Balance
100
Is the sun a star or a planet?
Star
200
What is step 1 in the engineering design process?
Define the problem
200
What step in the scientific method involves making predictions based on prior knowledge or observations?
Write a hypothesis
200
Identify 3 control variables for the following scenario:
You are examining how different cleaning products affect the number of bacteria on a surface.
1. Type of surface
2. Amount of bacteria to start with
3. Cleaning time
200
What does it mean for a procedure to produce "consistent results"?
When the experiment is repeated, the same outcomes should occur under the same conditions.
200
What is the correct way to read the measurement from a graduated cylinder?
Read the measurement from the bottom of the meniscus.
200
What is the name of the second biggest planet in our solar system?
Saturn
300
Describe what happens during the "prototype" step of the engineering design process.
In the prototype step, a model of the solution is made to test if the design works and if it is possible.
300
Explain the difference between a scientific law and a theory?
A scientific law describes a consistent relationship observed in nature, while a theory explains how or why something happens.
300
Identify the independent variable, dependent variable, and control variables for the following scenario:
You are examining how screen time before bed affects sleep duration.
IV: Amount of screen time
DV: Duration of sleep
CV: Age of participant, bedtime routine, environmental factors (light, noise level).
300
Give an example of a qualitative observation and a quantitative observation.
Quantitative:
Qualitative:
300
What is the correct measurement for this graduated cylinder?
44.8 mL
300
I'm sometimes full, but I never overflow.
What am I?
The Moon
400
Why is it important to iterate in the engineering design process?
Iteration allows for testing, evaluation, and improvements based on feedback and results.
400
Explain the main difference between a credible source and a reputable source?
Give one example for each.
A credible source is authored by someone with expertise or experience, while a reputable source relies on the publication's reputation (e.g., government sites or peer-reviewed journals).
400
Write a hypothesis for the following research question (Use if... then... because...):
How does the size of a fish tank affect the growth rate of goldfish?
If goldfish are placed in a larger tank, then their growth rate will increase, because more space provides a healthier environment for the fish, reducing stress and allowing for more food consumption.
400
A scientist is studying how different fertilizers affect plant growth. What is one qualitative and one quantitative tool they could use to collect data?
A qualitative tool could be a camera to document plant color and health.
A quantitative tool could be a ruler to measure plant height.
400
If a sugar cube took 60 seconds to dissolve in an unknown water sample, what might you estimate the water temperature to be?
50°C
400
You will find me in Mercury, Earth, Mars, and Jupiter, but not in Venus or Neptune. What am I?
The Letter R