Making Observations Lab
SAFETY FIRST!!
Never taste anything or put anything in your mouth without permission!
Background Information: One of the most important skills in science is that of
. Most of the time we think of observation as something we do with our eyes; when we see something, we observe it. However, all five of our senses can be used to make observations: sight, hearing, taste, touch, and smell. Observations using our five senses to identify and describe an object’s properties or characteristics are called qualitative observations. Scientists also use tools such as a hand lens, a ruler, a balance, a thermometer or a graduated cylinder to help them make more precise or specific observations. Observations made using measurement tools that involve a number or quantity are called quantitative measurements.
A good scientist is observant and notices things in the world. He or she becomes curious about what’s happening and asks questions. Observing can also include reading and studying what others have done in the past because scientific knowledge is collective. As you make observations, you may begin to ask new questions about those observations.
Materials: ruler, measuring tape, balance, mass cubes, Triple Beam Balance, hand lens, spring scale, 1 piece of candy (Keep the candy wrapped until instructed to do otherwise.
Procedures: (Write you observation statements in your Science Notebook)
1.
Open up the wrapper but don’t remove it from the candy.
2.
Use your sense of SMELL to observe the candy. Record statements describing what you observed.
3.
Use your sense of SIGHT to observe at least three properties of the candy. Record statements describing what you observed.
4.
Use the tools on the tray to make at least four other observations. Record statements describing specific information you measured.
5.
Use your sense of TOUCH to observe at least three properties of the candy. Record descriptions of what you observed.
6.
Remove the candy wrapper and put the candy in your mouth. Use your sense of
HEARING and sense of TASTE as you chew. Record statements describing both senses that you observed.
Adapted from M. Poarch – 2003 http://science-class.net

Questions:
1. Which of the senses was best for making observations about the candy?
Explain your answer.
2. Is the sense listed above always the best one to use? Why or why
not? Given reasons to support what you think.
3. Explain why using
to make observations is useful to scientists.
4. Based on your observations, write at least three new questions you could
ask about the candy.