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Savvas Chapter 2 -7th Grade Using Mathematics in Science -Modified

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Last updated almost 3 years ago
35 questions
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Question 19
19.
Scientists often rely on a(n) _______ when they cannot obtain an exact number.
Question 20
20.
7. A reliable measurement is both _______ and precise.
Question 21
21.
10. The significant figures in a measurement include all digits measured exactly, plus one__________ digit.
Question 22
22.
_______data are data that do not fit with the rest of a data set.
Question 23
23.

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Question 33
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Question 34
34.

Use the graph to predict the boiling time of water that has a volume greater than 2,000 milliliters.

Question 35
35.

Name the 3 parts of any system. For an extra point, name the 4 part that sometimes occurs

On what number is the metric system based?
1
10
100

Which is a common unit of density?
g
g/ml
g/s
Which of the following is the middle number in a set of data?
mean
median
mode
A low percent error indicates that the result you obtained is
accurate
inaccurate
anomalous data
Which term refers to how close a group of measurements are to each other?
estimate
accuracy
precision
On which of the following graphs do data points yield a straight line?
Non-Linear
Linear
Bar
On a nonlinear graph, the data points are never which of the following?
point
Along a curved line
Along a straight line
Exactly on a graph line
A line graph is used when which of the following is true?
An independent variable is continuous
No variable is continuous
An independent variable is not continuous
When doing a science investigation, what should be your chief concern?
your own safety
your classmates’ safety
both your safety as well as your classmates
Weight is a measure of how much mass is contained in a given volume.
True
False
The basic unit for measuring volume is the kilogram.
True
False
On the Kelvin scale, water freezes at 0°C and boils at 100°C.
True
False
An object’s temperature is the amount of space it takes up
True
False
Scientists control changes in the responding variable.
True
False
To help you see what the data from an experiment mean, you could use a(n) graph.
True
False
A point that does not fall exactly on a graph line is a(n) anomalous data point.
True
False
Line graphs display data that show how the dependent variable changes in response to the independent variable
True
False
Doing good preparation ahead of time helps you stay safe during science investigations.
True
False
Which of the following shows the mean with the correct number of significant figures for the numbers 15.6, 14.1, 7.7, 12.9, 12.9?
12
12.6
12.64
All systems have input, ___________________, and output.
process
model
system
A(n) ___________________ model might include a drawing or a three-dimensional object.
Mathematical equation
Physical
Process
___________________ is the material or energy that goes into a system.
Input
Process
Output
Output that changes a system in some way is called __________________.
input
Feedback
Systems
A Field is defined as :
a beach
a park
anywhere outside a science laboratory
Which of the following are you least likely to see represented by a safety symbol in the procedures of an investigation?
flames
lab apron
time
When an accident occurs, the first person you should tell is any adult not your teacher.
True
False
Safety symbols are pictures that alert you to possible sources of accidents in an investigation.
True
False
Doing good preparation ahead of time helps you stay safe during science investigations.
True
False
Scientists use models to understand things they can observe directly.
True
False