North Carolina Science Grade 7

Chapter 1: The Nature of Science and Technology

Section 1 Self-Check Quiz-Eng.

1.
Numbers can be used to __________.
A)describe observations
B)list materials
C)make an experiment safer
D)reduce bias in experiments
2.
Which one of these is a disease that happens when a person eats contaminated food?
A)chicken pox
B)polio
C)leukemia
D)E. coli
3.
Which one of these is a symptom of cholera?
A)dehydration
B)runny nose
C)blurred vision
D)below-normal body temperature
4.
__________ uses your previous experiences to help you predict what will happen in experiments.
A)A data table
B)Accuracy
C)An independent variable
D)Prior knowledge
5.
_________ is the application of science to make tools that people can use.
A)Technology
B)Control
C)A trial
D)Safety
6.
Improvements in communication technology have led to __________ of scientific information.
A)internalization
B)globalization
C)localization
D)rationalization
7.
You want to test building materials for their durability in cold weather. You make a small house and conduct different tests on it. What is this an example of?
A)an independent variable
B)a bacterium
C)a model
D)a data table
8.
To make sure experimental results are valid, which of these procedures must be followed?
A)pick two hypotheses
B)include bias
C)conduct multiple trials
D)change the experimental process
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