Science Test 1

Question 1

Scientific Method

Answer 1

An organized set of investigation procedures used by scientists

Question 2

Hypotheses

Answer 2

Educated guess or testable prediction

Question 3

Experiment

Answer 3

Organized procedure for testing hypothesis

Question 4

Control

Answer 4

Standard for comparison

Question 5

Constant

Answer 5

Factor that doesn’t vary in an expirement

Question 6

Independent variable

Answer 6

(X-axis)

Factor that is adjusted by the experimenter

Question 7

Dependent variable

Answer 7

(Y-axis)

Factor whose value depends on the independent variable

Question 8

Scientific law

Answer 8

Rule of nature that sums up related observations to describe a pattern in nature

Ex: Law of gravity

Question 9

Scientific theory

Answer 9

Explanation based on experiments - most logical explanation

Ex:black hole theory

Question 10

What is the scientific method?

Answer 10

Ask a question: ask a question about something that you observe

Research: to look up information on the internet or
In a book

Form hypothesis: form a prediction

Design an experiment: create a test to do to see if your hypothesis is accurate

Gather and analyze data: gather your experiment when it’s finished and collect you measurements them to see if there accurate

Conclusion: state whether your data supported your hypothesis and why?

Share results: to share your results with other people

Further research: if your hypothesis is not accurate your can do further research on why you hypothesis was wrong, and might want to redo your experiment

Question 11

Density

Answer 11

Length•width

Question 12

International system of units(SI)

Answer 12

Standard system of measurement used worldwide

Question 13

SI base units

Answer 13

Quantity Measured Unit Symbol
•length. Meter. M
Mass. Kilogram. Kg
Time. Second. s
Electric current. Ampere. A
Temperature. Kelvin. K
Amount of substance. Mole. mol
Intensity of light. Candela. cd

Question 14

Density

Answer 14

Density is obtained by combining two SI units

Question 15

Common SI prefixes

Answer 15

Prefix. Symbol. Multiplying factor
Kilo. k. 1.000
Deci. d. 0.1
Centi. c. 0.01
Milli. m. 0.001
Micro. 0.000 001
Nano. n. 0.000 000 001

Question 16

Length

Answer 16

Distance between two points

Question 17

Volume

Answer 17

The amount of space occupied by an object

Question 18

Length

Answer 18

Amount of matter in an object

Question 19

Volume

Answer 19

Mass per unit volume of a material

Question 20

Mass

Answer 20

Interval between two occurring events

Question 21

Graph

Answer 21

A visual display of information or data

Question 22

Line graph

Answer 22

Shows time or how the data changes overtime

Question 23

Bar graph

Answer 23

Useful for comparing information collected by counting

Question 24

Circle graph

Answer 24

Used to how a fixed quantity is broken down into parts