Nature of Science 2

Which part of the illustration shows why water evaporates?

• Sun heats water
• Wind moves clouds
• Steam/Water vapor
• Water flows back into sea

The picture shows a small, shelled animal. Which tool should be used to measure the MASS of the shelled animal?

• ruler

• stopwatch

• balance scale

• graduated cylinder

Use the drawing to answer the question.

A student wants to compare how long a flashlight will continue to shine using different brands of batteries. How can the student make sure that the test is fair?

• A. Test the same brand of batteries in two flashlights.

• B. Test each brand of batteries in the same flashlight.

• C. Test different sizes of batteries in the same flashlight.

• D. Test whether some flashlights can work with only one battery.

Using the right science tools for measuring is important. For example, a _______________________ is used to measure temperature.

• balance

• thermometer

• graduated cylinder

• meter stick

The information a scientist collects or measures is called ____________, and it organized in an easy to read table.

• instructions

• predictions

• data

• hypothesis

The experimental setup in which you compare all other setups is ?

• Control

• Experiment

• Scientific method

• Science

Collecting information by using the senses

• observing

• communication

• knowledge

• opinion

Why is it important for scientists to perform repeated trials during an experiment?

• To show results are invalid

• To copy from smarter scientists

• To prove your prediction was right

• To validate our results

"The rock on the ground is jagged and reddish in color," is an example of _____.

• an observation

• a prediction

• an inference

• an experiment

Harry decided to study insects. He marked off an area in his yard with string. Each day he observed the insects within the area with a hand lens. He recorded the kinds of insects he saw and the number of each kind. How could Harry best communicate to his classmates the kinds and numbers of insects in his study area?

• Graph his data.

• Take a picture of some of the insects

• Write a story about his favorite insect.

• Tell someone about the insects he saw.