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Science Test Practice

Total questions: 20

Worksheet time: 5hrs 0mins

Name
Class
Date
1.

In an experiment, the variable you keep the same is the...

a)

independent variable

b)

dependent variable

c)

controlled variable

d)

constant variable

2.

What is the information gathered by observation or experimentation when it is not called evidence?

a)

scientific discoveries

b)

data

c)

theory

d)

variable

3.

Jessa wants to learn more about the feeding habits of ants. What steps should Jessa take to best study the feeding patterns of ants?

a)

form a hypothesis, conduct an experiment, record data, make a conclusion

b)

conduct an experiment, form a hypothesis, make a conclusion, record data

c)

form a hypothesis, record data, conduct an experiment, make a conclusion

d)

record data, form a hypothesis, make a conclusion, conduct an experiment

4.

What is the variable representing the value of being manipulated or changed?

a)

constant

b)

independent variable

c)

control

d)

dependent variable

5.

Homer notices that his shower is covered in a strange green slime. Homer decides to spray half of the shower with coconut juice, thinking this will kill the slime. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. What is the independent (manipulated) variable in this experiment?

a)

water

b)

green slime

c)

his shower

d)

coconut juice

6.

The variable that the experimenter is controlling or manipulating and that gets graphed along the x-axis is the

a)

independent variable

b)

dependent variable

c)

control

d)

outside factor

7.

It's the part of the Scientific Method that describes the steps to the experiment. What is it called?

a)

purpose

b)

hypothesis

c)

materials

d)

procedure

8.

The steps used by scientists to solve problems and uncover facts is the...

a)

testing method

b)

Cer method

c)

scientific method

d)

question method

9.

A written statement using the words "if, then" is ...

a)

a result

b)

information

c)

a problem

d)

a hypothesis

10.

How do you check whether the data supports the hypothesis?

a)

analyze the data

b)

modify the experiment

c)

predict the outcome

d)

design the experiment

11.

A student hypothesized that the amount of sunlight a sunflower plant receives determines the number of sunflower seeds the plant produces. In her experiment, the number of seeds produced is the...

a)

dependent variable

b)

independent variable

c)

controlled variable

d)

uncontrolled variable

12.

The process of asking questions is called...

a)

inquiry

b)

predicting

c)

estimating

d)

comparing

13.

A scientific investigation usually begins with...

a)

a formulation of a hypothesis

b)

observations of specific events

c)

a statement of theory

d)

a question

14.

A scientist was conducting an experiment and noticed that when he mixed two substances together an unusual odor occurred. What scientific skill did the scientist use?

a)

prediction

b)

observing

c)

modeling

d)

classifying

15.

The part of an investigation that remains the same is the...

a)

hypothesis

b)

independent variable

c)

control

d)

dependent variable

16.

A botanist wants to see how different colored light waves influence the growth of pea plants. She puts the same number of seeds into three identical pots with the same kind and amount of soil. She then gives them the same amount of water every three days for the length of the experiment. One pot is placed into a dark windowless closet. Another pot is left on the windowsill, and the third is placed under a lamp with a green bulb. She records the height of each plant every day for three months. What is the independent variable in this experiment?

a)

the amount of soil in the pots

b)

the color of the light given to the plants

c)

the amount of water given to the plants

d)

the amount of time the experiment was conducted

17.

A student hypothesized that the amount of sunlight a sunflower plan receives determines the number of sunflower seeds the plant produces. In her experiment, the number of seeds produced is the...

a)

independent variable

b)

dependent variable

c)

controlled variable

d)

uncontrolled variable

18.

A student planted the same kind of seeds in pots A and B. She planted five seeds in pot A and five seeds in pot B. The amount and type of soil in both pots was the same. She added the same amount of water to both pots each week. Pot A was placed in a sunny window. Pot B was placed in a dark room. After four weeks, she observed the plants in both pots. The plants in pot A were green, with tall, think stems. The plants in pot B were yellow, with tall, thin stems. Which statement best explains why the plants in pot A were different from the plants in pot B?

a)

Pot A contained more soil than pot B.

b)

Pot A contained more seeds than pot B.

c)

Pot A received more sunlight that pot B.

d)

Pot A received more water than pot B.

19.

Which would be the best high-level scientific question?

a)

Who made the first microscope?

b)

How many giraffes live in Africa?

c)

How long ago did dinosaurs live on Earth?

d)

Does the amount of salt in water affect the temperature it boils at?

20.

What type of observation deals with descriptions that cannot be expressed in numbers?

a)

qualitative

b)

investigative

c)

quantitative

d)

scientific