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Savvas 6th Grade Chapter 2 Review (Lessons 1-5)

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Pitanje 1
1.

For which of the following would the kilometer be the most appropriate unit of measure?

Pitanje 3
3.

Which of the following would you measure using a graduated cylinder?

Pitanje 5
5.

Pitanje 7
7.

A(n) significant figure is an approximation of a number based on reasonable assumptions.

Pitanje 8
8.

Scientists often rely on estimates when they cannot obtain exact numbers.

Pitanje 9
9.

Percent error calculations are data that do not fit with the rest of a data set.

Pitanje 10
10.

Accuracy refers to how close a group of measurements are to each other.

Pitanje 11
11.

A bar graph can be used to display only numerical data.

Pitanje 12
12.

A graph in which the data points do not form a straight line is a(n) linear

Pitanje 13
13.

Line graphs display data that show how one variable changes in response to another variable.

Pitanje 14
14.

Feedback is a type of input.

Pitanje 15
15.

Output is what happens in a system.

Pitanje 16
16.

A complex or simple system can be represented in a model.

Pitanje 17
17.

A model can show your body’s digestive system.

Pitanje 18
18.

Scientists can use models to predict stability in a system as a result of a change in output or systems feedback.

Pitanje 19
19.

When you are doing an investigation with glass beakers, there will always be a safety symbol for heating.

Pitanje 20
20.

Use plastic gloves when handling hot objects.

Pitanje 21
21.

Wear safety goggles when you are working with chemicals or sharp objects.

Pitanje 22
22.

When you handle animals, use plastic gloves.

Pitanje 23
23.

A(n) fire blanket smothers fires.

Pitanje 24
24.

A graph is a picture of that allows you to visually analyze and

compare information

Pitanje 25
25.

In experiments, scientists make changes to one variable, called the

variable.

Pitanje 26
26.

Both linear graphs and graphs can show trends.

Pitanje 27
27.

A reliable measurement is both and .

Pitanje 28
28.

Temperature and time are examples of variables.

Pitanje 29
29.

In experiments, scientists make changes to the independent variable, and the data

they collect show what happened to the variable as a result of

these changes.

Pitanje 30
30.

The is the numerical average of a set of data.

Pitanje 31
31.

communicate how precise measurements are.

Pitanje 32
32.

If certain data are not , they are called anomalous data.

Pitanje 33
33.

The of a set of data is the difference between the greatest value and the least value in the set.

Pitanje 34
34.

Scientists use models to understand things that they cannot observe

Pitanje 36
36.

A system produces a result or

Pitanje 38
38.

What should you always do to be safe in the field?

Pitanje 40
40.

What is the first thing you should do in case of a fire in the laboratory?