Question

vocabulary review
use the terms in the box to complete the sentences.

1. an investigation in which all conditions are controlled is a(n) ________.
2. jane wants to measure the mass of a rock. the tool she should use is a(n) ________.
3. any condition in an experiment that can be changed is a(n) ________.
4. the setup to which you compare all the others in an experiment is the ________.

(box: balance, control, experiment, variable)

science concepts
fill in the letter of the choice that best answers the question.

1. gabrielle counts the number of people who visit the community pool each day for 1 week. she displays her data using a bar graph.

bar graph: number of pool visitors, x - axis: sun, mon, tues, wed, thurs, fri, sat; y - axis: 0 - 250. sun: ~140, mon: 200, tues: 160, wed: ~20, thurs: ~120, fri: 210, sat: 240
how many more people did gabrielle observe at the pool on sunday than on thursday?
a 20, b 30, c 75, d 100

1. observations are made using our five senses. we can then use those observations to draw conclusions. which of the following is an example of a conclusion?

f “the object is flat.”
g “the flower smells like mint.”
h “crickets chirp to attract mates.”
i “the food is both sweet and salty.”

Explanation:

Vocabulary Review

1. # Brief Explanations:

An investigation with controlled conditions is an experiment.

Answer:

experiment

1. # Brief Explanations:

A balance is used to measure mass.