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8th Science final study guide

Total questions: 23

Worksheet time: 17mins

Name
Class
Date
1.

Lists the correct order of the scientific method.

a)

Observation, Research, Hypothesis, Experiment, Collect data, Analysis, Conclusion

b)

Hypothesis, Observation, Experiment, Collect data, Conclusion, Analysis, Research

c)

Analysis, Observation, Hypothesis, Collect data, Research, Experiment, Conclusion

d)

Research, Conclusion, Hypothesis, Observation, Experiment, Collect data, Analysis

2.

What is the purpose of the scientific method.

a)
To prove preconceived ideas
b)
To ignore evidence and rely on intuition
c)
To make wild guesses about the natural world
d)

To solve Questions

3.

What is the difference of IND. and DEP. variables.

a)

One is change as a result, while the other is what being changed.

b)

One is the result while the other is not changed.

4.

Jerry was having a party and was curious what music did the participants like more. What is the dependent variable to this experiment?

a)
Color of the party decorations
b)
Participants' preference for music
c)
Types of food served at the party
5.

Jerry was having a party and was curious what music did the participants like more. What is the independent variable to this experiment?

a)
Number of guests at the party
b)
Color of the party decorations
c)
Type of music chosen for the party
6.

Jerry was having a party and was curious what music did the participants like more. What is a constant to this experiment?

a)
Jerry's favorite music
b)
The color of the party decorations
c)

The participants.

7.

Hope was curious what was the favorite food of her family. What is the independent and dependent variable?

a)

Independent variable: The type of food; Dependent variable: family's preference for that food

b)
Independent variable: food preference; Dependent variable: family
c)
Independent variable: family; Dependent variable: favorite food
d)
Independent variable: family's preference for food; Dependent variable: favorite food
8.

What is the charge of a Proton

a)
+1
b)
0
c)
-1
9.

What is the charge of a Neutron

a)
+1
b)
0
c)
-1
10.

What is the charge of a Electron

a)
+1
b)
0
c)
-1
11.

What is a Compound

a)

A substance formed when two or more chemical same elements are chemically bonded together

b)

A substance formed when two or more chemical different elements are chemically bonded together

12.

What is a Molecule

a)

A substance formed when two or more chemical same elements are chemically bonded together

b)

A substance formed when two or more chemical different elements are chemically bonded together

13.

How do you calculate Protons

a)

Atomic number - Atomic Mass

b)
Multiply the number of neutrons by 2
c)

atomic number

14.

How do you calculate electrons

a)

Atomic number - Atomic Mass

b)

Multiply the number of Protons by 3

c)

Equal to Protons

15.

How do you calculate Neutrons

a)

Atomic number - Atomic Mass

b)

Multiply the number of electrons by 8

c)

Atomic mass - atomic number

16.

What do periods have in common

a)

Amount of Valence Electrons

b)

Amount of Shells

17.

What do groups have in common

a)

Amount of Valence Electrons

b)

Amount of Shells

18.

What is the difference between a chemical and physical reaction.

a)

Chemical reactions Can be changed back while physical reactions can't be changed

b)

Chemical reactions Can't be changed, while physical reactions can be

19.

Where does energy come from in the water cycle.

a)
Sun's heat
b)
Wind power
c)
Underwater volcanoes
d)
Moon's gravity
20.

How does gravity interact with the water cycle.

a)
Gravity pushes water upwards into the atmosphere
b)
Gravity causes water to turn into solid ice instead of evaporating
c)
Gravity has no effect on the water cycle
d)
Gravity causes water to fall as precipitation, flow as runoff, and evaporate into the atmosphere.
21.

70% of water we used is used in _______

a)
industrial processes
b)
household use
c)
mining
d)
agriculture
22.

What happens when to air masses slam into each other?

a)
Formation of a tornado
b)
Formation of a front and changes in weather patterns
c)
Creation of a calm and sunny day
d)
No change in weather patterns
23.

How does the green house effect work?

a)
The green house effect is caused by the Earth's rotation around the sun
b)
The green house effect is a result of excessive deforestation
c)
The green house effect is caused by the use of wind turbines
d)
Certain gases in the Earth's atmosphere trap heat from the sun, preventing it from escaping back into space.