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Unit 1 TEST

Total questions: 45

Worksheet time: 45mins

Name
Class
Date
1.

What is the DEPENDENT variable (effect) in this experiment?


"Does eating breakfast improve test scores?"

a)

eating breakfast or not

b)

the grade you got on the test

c)

what time you get up in the morning

d)

how tasty the breakfast is

2.

You are testing how the amount you water a plant affects its growth. What would be the INDEPENDENT VARIABLE in this experiment.

a)

They type of pot you put the plants in.

b)

The amount you water each plant.

c)

The amount of sunlight the plants get.

d)

The amount the plant grows.

3.

Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark ALL that apply.

a)

She used different types of seeds/plants.

b)

The plants are in different kinds of pots.

c)

She did not plant very many plants.

d)

Seed age might not make a difference.

4.

What is the DEPENDENT variable (effect that is measured) in this experiment?

"Do tall people jump further than short people?"

a)

height of the person

b)

weight of the person

c)

how fast the person runs

d)

how far the person jumps

5.

A student wants to test the hypothesis of "If salt is added to water then the boiling point of water will decrease (go down)." What is the independent variable?

a)

Whether salt is added or not

b)

Boiling Point

c)

Amount of water

6.
Which of the following is an observation of the picture?
a)
The person is wearing a T-shirt
b)
It is a sunny day
c)
The person is going to a birthday party
d)
The gift is a DVD player
7.
A seedling was planted in a pot of soil and placed on a sunny windowsill. According to the chart above, the plant most likely - 
a)
received the sunlight and water it needed to grow
b)
was replanted in a new pot in Week 3
c)
did not receive what it needed to grow
d)
grew 5 cm in six weeks
8.
Which of the following is NOT an inference about the man in this picture:
a)
The man hates his purple shirt.
b)
The man has a purple shirt.
c)
The man is having a bad day.
d)
This man is upset because he's hungry
9.
You have been injured in the lab (cut, burned, etc.) First you should -
a)
apply first aid yourself
b)
tell the teacher at once
c)
see a doctor after school
d)
visit the school nurse after class
10.
The tool used to precisely measure liquid volume is the
a)
beaker
b)
flask
c)
graduated cylinder
11.
This piece of lab equipment is called a  _______________.
a)
Beaker
b)
Graduated Cylinder
c)
Flask
d)
Evaporating Dish
12.

What is the measurement on the triple-beam balance shown?

a)

335g

b)

35g

c)

3.5g

d)

305g

13.
How many sophomores like burritos and pizza?
a)
6
b)
5
c)
11
d)
50
14.
On what day of the week did the most shooting stars occur?
a)
Monday
b)
Wednesday
c)
Thursday
d)
Friday
15.
Which of the following statements about the motion of the squirrel is true?
a)
The squirrel moved with the greatest speed between 0 s and 5 s.
b)
The squirrel moved with the greatest speed between 8 s and 10 s.
c)
The squirrel moved with a constant speed between 0 s and 8 s.
d)
The squirrel moved with a constant speed between 5 s and 10 s.
16.
An experiment is conducted to test how different cleats change an athletes running speed.  Six different types of cleats are tested and the 100m run time is recorded.  What is the independent variable?
a)
The type of cleat
b)
The run time
c)
The 100 meters
d)
The athlete
17.
Which of the following is a quantitative observation?
a)
The bird is very colorful.
b)
The bird has 4 different colors on him.
c)
The bird has many, many feathers.
d)
It is a bird. 
18.
Things that stay the same throughout the whole experiment are called
a)
controls
b)
dependent variables
c)
independent variables
d)
constants
19.
An experiment is conducted to test which kind of cat food a cat likes best.  The amount of food the cat eats is recorded and four different type of food are tested. What is the dependent variable?
a)
The cat food
b)
The cat
c)
The amount of food the cat eats.
d)
The bowl the cat ate out of.
20.

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the constants?

a)

Type of plant, amount of music, and sunlight

b)

Water, apple juice, milk

c)

Plant growth

21.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the constant.
a)
distance traveled by the ball
b)
height of the ramp
c)
mass of the ball
d)
weight of the ball
22.

In an experiment, how many variables should you change at a time?

a)
4
b)
3
c)
6
d)
1
23.

What is happening to the temperature in New York City?

a)

It is remaining about the same.

b)

It is mostly decreasing.

c)

It is mostly increasing.

d)

There is a pattern of increasing and decreasing.

24.
What can you infer about the temperature for E.coli bacterial growth?
a)
E. coli does not grow well at low and high temperatures.
b)
E coli will continue to grow at very high temperatures.
c)
E.coli grows best at very low temperatures
d)
E.coli grows best at very high temperatures.
25.
According to the graph below, how many more pounds of garbage was collected at Cedar Hills in 2008 than in 2004?
a)
2000 lbs
b)
2750 lab
c)
3000 lbs
d)
1000 lbs
26.

The information you collect while doing your experiment is called

a)

conclusions

b)

data

c)

hypotheses

d)

procedures

27.

A student wants to test the effects of different types of exercise on heart rate.  What would be the dependent variable of the experiment?

a)

the measurement of heart rate

b)
type of exercise
c)
amount of exercise
d)
time of day exercise occurs
28.

Which of the following shows the correct sequence for the scientific method?

a)

Conclusion, Experimentation, Hypothesis, Observation

b)

Observation, Experimentation, Hypothesis, Conclusion

c)

Observation, Hypothesis, Experimentation, Conclusion

d)

Experimentation, Conclusion, Observation, Hypothesis

29.
What is a hypothesis?
a)
A hypothesis is the right answer to an experiment.
b)
A hypothesis is the wrong answer to an experiment.
c)

A hypothesis is an educated guess or prediction of what will happen.

30.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
31.
When mixing chemicals students should always wear
a)
hair bows
b)
goggles
c)
flip flops
32.
If you are not sure what to do during a lab activity:
a)
guess
b)
change lab partners
c)
ask a teacher
d)
just sit quietly and do nothing
33.
What is an observation for this picture?
a)
The man is scared
b)
The man is going to get eaten
c)
There is a man in a kayak
d)
The man is paddling fast
34.
Which of the following statements is an inference of the picture?
a)
A student is roasting a marshmallow
b)
Two students are listening through cups
c)
The teacher is not in the classroom
d)
A student is setting off a rocket
35.

The information you collect while doing your experiment is called

a)

conclusions

b)

data

c)

hypotheses

d)

procedures

36.

A(n) ___________________________ is what you can learn about an object by using your 5 senses.

a)

Observation

b)

Quantitative Observation

c)

Inference

d)

Hypothesis

37.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
38.

Susan said, “If I fertilize my geranium plants, then they will have more flowers.” What part of the Scientific Method is this?

a)

recognize a problem

b)

test the hypothesis with an experiment

c)

form a hypothesis

d)

draw conclusions

39.

A scientific statement that explains observations.

a)
data
b)
theory
c)
hypothesis
d)
fact
40.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
41.

Esther became interested in insulation while her parent’s new house was being built. She decided to determine which insulation transferred the least heat. She filled each of 5 jars half-full with water.

She sealed each jar with a plastic lid.Then she wrapped each jar with a different kind of insulation. She put the jars outside in the direct sunlight. Later, she measured the temperature of the water in each jar. What is the independent variable?

a)

The type of insulation

b)

The temperature of the water

c)

Number of houses

d)

The amount of sunlight

42.

Using the picture, identify the control group.

a)

Trial 1

b)

Trial 2

c)

Trial 3

43.

Which of the following best describes a control group in an experiment?

a)

The group that receives the experimental treatment (or IV)

b)

The group that collects the data

c)

The group that is not exposed to the experimental variable (does not get the IV)

d)

The group with the largest sample size

44.

Why is it important to change only one variable at a time in a well-designed experiment?

a)

To use more materials

b)

To save time during the experiment

c)

To make the experiment more interesting

d)

To ensure that the results are due to the variable being tested

45.

What is the main purpose of repeating trials in an experiment?

a)

To make the experiment longer

b)

To increase the number of variables

c)

To confirm the reliability of the results

d)

To change the hypothesis

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