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Semester 1 Review

Total questions: 106

Worksheet time: 2hrs 2mins

Name
Class
Date
1.

Which question would be the best testable scientific question?

a)

How long ago did dinosaurs live on the Earth?

b)

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

c)

How many giraffes live in Africa?

d)

Who made the first microscope?

2.

A scientist hypothesizes the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

a)

the incubator

b)

the gender of the alligator

c)

the male alligators

d)

the temperature

3.

A scientist hypothesizes the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

a)

the incubator

b)

the gender of the alligator

c)

the male alligators

d)

the temperature

4.

All the things in an experiment that must be the same to make it fair are called

a)

controlled experiments

b)

controlled variables or constants

c)

dependent variables

d)

independent variables

5.

In science, an educated guess is called a/an _______.

a)

Prediction

b)

Hypothesis

c)

Theory

d)

Law

6.

If you were measuring the mass of a fly, you should use

a)

meters

b)

kilograms

c)

liters

d)

grams

7.

Which unit of measure is NOT used in the Metric System (International System of Units or SI)?

a)

grams

b)

centimeters

c)

milliliters

d)

inches

8.

Who is responsible for creating the metric system?

a)

Sir Isaac Newton

b)

Antoine Lavoisier

c)

Andres Celsius

d)

Marvin Metric

9.

Who is responsible for creating the metric temperature scale?

a)

Sir Isaac Newton

b)

Antoine Lavoisier

c)

Andres Celsius

d)

Marvin Metric

10.

On the Celsius temperature scale ___° is water freezing and ____° is boiling water.

a)

0, 100

b)

100,0

c)

32, 212

d)

273 , 373

11.

What is the mass?

a)

317g

b)

317.8g

c)

311g

d)

137g

12.

How long is the line? Use the cm ruler.

a)

15 cm

b)

16 cm

c)

17 cm

d)

15.7 cm

13.

Identify the following observations as qualitative or quantitative:

Thor is wearing a red cape.

a)

Qualitative

b)

Quantitative

14.

Identify the following observations as qualitative or quantitative:

Thor flew 1500km in the air.

a)

Qualitative

b)

Quantitative

15.

The metric prefix "centi" means what?

a)

1000

b)

100

c)

1/100

d)

1/1000

16.

1,000 liters is equal to what unit?

a)

1 km

b)

1 m

c)

100 kL

d)

1 KL

17.

Convert 43.5 mg to grams

a)

43500 g

b)

.435 g

c)

.0435 g

d)

.00435

18.

What is the formula for density?

a)

D = m/v

b)

D=mv

c)

D=v/m

d)

D=vm

19.

If you do not understand a lab procedure, you should

a)

Figure it out as you do the lab

b)

Try several methods until something works.

c)

Ask the teacher before beginning.

d)

Skip it and go to the next part.

20.

Which part of the scientific method is an educated guess?

a)

Problem

b)

Question

c)

Hypothesis

d)

Conclusion

21.

What is the density of water?

a)

.5 g/ml

b)

.75 g/ml

c)

1.0 g/ml

d)

1.5 g/ml

22.

100N of force is pushing in the opposite direction as 25N of force. The Net force is

a)

125N

b)

100N

c)

25N

d)

75N

23.

What happens when two equal forces act in the opposite direction?

a)

They create a larger mass.

b)

The stronger one prevails

c)

They cancel each other out.

d)

Their sum is divided by three and that is the total force.

24.

The tendency of an object to resist a change in its motion.

a)

Force

b)

Inertia

c)

Laziness

d)

Velocity

25.

Captain America was riding his motorcycle and traveled 500km in 4 hours. What was his average speed?

a)

50 km/h

b)

125 km/h

c)

250 km/h

d)

2000 km/h

26.

What is the difference between speed and velocity?

a)

Velocity includes time

b)

Velocity includes direction

c)

Speed includes direction

d)

They are spelled different...duh!

27.

The force of gravity on a person or object on the surface of a planet is called

a)

Mass

b)

Weight

c)

Free Fall

d)

Terminal Velocity

28.

Which of these is NOT a type of friction?

a)

Rolling

b)

Sliding

c)

Fluid

d)

Stationary

29.
push or pull acting on an object
a)
speed
b)
force
c)
position
d)
mass
30.

Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.

a)

eventually stop since all objects ultimately "lose their steam"

b)

eventually stop as its inertia slowly becomes used up

c)

continue in motion with the same speed and direction

d)

either a, b, or c -- depending on whether the astronaut continues to push it

31.

A skateboard rolls down a hill, reaches the level surface and eventually comes to a stop. The fact that the skateboard ultimately stops is best explained by ____.

a)

an unbalanced force would be required to keep the sled moving forward at constant speed

b)

the presence of an unbalanced force (e.g., friction) can cause a moving object to stop

c)

the presence of inertia causes it to stop

d)

the natural tendency of any object is to ultimately stop

32.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
33.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
34.

How fast is acceleration if the only thing acting on it is gravity?

a)

9.8 m/s2

b)

9.8 m/s3

c)

9.6 m/s

d)

9.6 m/s2

35.

The factors that affect the amount of friction present are

a)

Mass and size

b)

Weight and size.

c)

How hard things push against each other and mass

d)

How hard things push against each other and surface type.

36.

The factors that affect gravity are

a)

mass and distance

b)

mass and surface type

c)

weight and force

d)

force and location

37.

A baseball is thrown a distance of 20 meters. What is its speed if it takes 0.5 seconds to cover the distance?

a)

40 m/s

b)

10 m/s

c)

3 m/s

d)

30 m/s

38.

What kind of speed does this graph represent?

a)

No speed.

b)

Constant Speed.

c)

Increasing speed.

d)

Decreasing speed.

39.

Thor pushes Loki off a cliff. If he has a mass of 65 kg and he accelerates towards the Earth at a rate of 9.8 m/s2 due to gravity, what is Loki's force as he screams through the air?

a)

6.37 N

b)

637 N

c)

637 m/s

d)

6.63 N

40.

When the surface of a mirror curves inward, like the inside of a bowl, it is called a

a)

plane mirror.

b)

convex mirror.

c)

concave mirror.

d)

diffuse mirror.

41.

What are the units of force?

a)

kg

b)

N

c)

m/s

d)

m/s2

42.
What is the equation for Newton's 2nd law?
a)
a = bc
b)
F = m/a
c)
F = ma
d)
a = b/c
43.
When mass is 10 kg, acceleration is 2 m/s/s, what is force?
F = ma
a)
5 N
b)
20 N
c)
8 N
d)
12 N
44.
The larger the mass you have the _____ force you need to change its motion.
a)
more
b)
less
45.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
46.
Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
47.
My cat eyeballs the christmas tree and decides to apply all of his mass directly to the center of the tree. This force causes the tree to accelerate down towards the ground.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
48.

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

a)

The cannon moving forward

b)

The cannon moving backwards

c)

The cannonball moving backwards

d)

The cannonball moving forward

49.

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

a)

The cannon moving forward

b)

The cannon moving backwards

c)

The cannonball moving backwards

d)

The cannonball moving forward

50.
a)
b)
c)
d)
51.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
52.
What is this objects speed at 2 s?
a)
5 m/s
b)
5 s/m
c)
20 m/s
d)
20 s/m
53.
How far did they run?
a)
A)100 seconds  
b)
B)100 meters
c)
C)18 meters 
d)
D)18 seconds
54.
What does the flat line mean for Charlie?
a)
He stayed at the same speed
b)
He slowed down
c)
He stopped running 
d)
He stayed at the same speed but at a slower rate
55.
Who won?
Hint: Greatest distance shortest time
a)
A)Albert  
b)
B)Bob
c)
C)Charlie
56.
How long did it take Charlie to finish the race?
a)
A)14 meters  
b)
B)12 seconds
c)
C)16.5 seconds
d)
 D)14 seconds 
57.

Segment O-A The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

58.

Segment A-B The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

59.

Segment B-C The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

60.

Segment C-D The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

61.

Segment D-E The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

62.

Segment E-F The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

63.

What is the volume of the rock?

a)

5 ml

b)

25 ml

c)

50 ml

d)

75 ml

64.

Electromagnetic waves can transfer energy without a(n)

a)

medium

b)

electric field

c)

magnetic field

d)

cord

65.

Visible light has a higher frequency than

a)

gamma rays

b)

x-rays

c)

ultra violet light

d)

infrared light

66.

The electromagnetic waves with the highest frequency is

a)

radio

b)

microwaves

c)

x-rays

d)

gamma rays

67.

The higher an em waves frequency, the higher its _______.

a)

wavelength

b)

energy

c)

volume

d)

sound

68.
rainbow
a)
light is reflected
b)
light is refracted
c)
light is absorbed
69.
Which images are opaque?
a)
A & C
b)
A,C,E, & F
c)
D, E, & F
d)
A & E
70.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
71.
What do we call this tool that separates white light into the colors of the Visible Spectrum?
a)
tuning fork
b)
prism
c)
microscope
d)
graduated cylinder
72.

which is a transparent object

a)

glass

b)

copper

c)

iron

d)

steel

73.
How do FM waves travel?
a)
As changes in the frequency of the wave
b)
As changes in the amplitude of the wave
c)
As changes in the wavelength of the wave
d)
As changes in the resonance of the wave
74.
What types of waves do cell phones use?
a)
Radio waves
b)
Gamma Rays
c)
Microwaves 
d)
Ultraviolet Rays
75.

On AM broadcasts, what remains constant?

a)

the amplitude

b)

the frequency

c)

the music

d)

the speech

76.
a)
Amplitude
b)
Crest
c)
Trough
d)
Wavelength
77.
a)
Frequency
b)
Amplitude
c)
Wavelength
d)
Trough
78.
a)
Trough
b)
Crest
c)
Amplitude
d)
Wavelength
79.
a)
Crest
b)
Trough
c)
Height
d)
Frequency
80.
Light waves are ___________
a)
Transverse waves
b)
Longitudinal waves
c)
Compressional waves
d)
Seismic waves
81.
Sound waves are _______________
a)
Transverse waves
b)
Longitudinal waves
c)
Circular waves
d)
Seismic waves
82.

What does a wave carry from place to place?

a)

energy

b)

matter

c)

people

83.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
84.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
85.
Which wave has the greatest amplitude?
a)
A
b)
B
c)
C
d)
D
86.
When the frequency of a wave increases, what happens to the wavelength?
a)
The wavelength and amplitude both increase.
b)
The wavelength increases.
c)
The wavelength decreases.
d)
Nothing happens, the two are not related.
87.
What do all mechanical waves require to be able to move?
a)
A high frequency
b)
A medium
c)
A resting point
d)
A vacuum
88.
It is the part of the wave where the particles are close together.  It is part A on this picture. 
a)
Compression
b)
Amplituide
c)
Rarefaction
d)
Wavelength
89.
It is the part of the wave where the particles are spread out.  It is part B in this picture. 
a)
Compression
b)
Rarefaction
c)
Amplitude
d)
Wavelength
90.
What kind of wave is pictured?
a)
Transverse Wave
b)
Longitudinal Wave
c)
compressional wave
d)
none of the above
91.
What kind of wave is pictured?
a)
Transverse
b)
Longitudinal
c)
Surface
d)
Electromagnetic
92.

Our modern understanding of light and color is due to the efforts of which scientist?

a)

Galileo

b)

DaVinci

c)

Newton

d)

Nye

93.

Doctors are able to make sonograms through the use of

a)

ultrasound.

b)

infrasound.

c)

sonar.

d)

acoustics.

94.
As a sound source approaches and then moves past a stationary observer, the observer will hear
a)
a steady rise in pitch
b)
a sudden drop in pitch
c)
a drop in pitch, then a rise in pitch
d)
a rise in pitch, then a drop in pitch
95.
The Doppler effect can cause an apparent change in...
a)
loudness
b)
intensity
c)
pitch
d)
reasonance
96.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
97.
Which of the following sound waves represents a dolphin's loud and high pitched whistle. 
a)
Wave 1
b)
Wave 2
c)
Wave 3 
98.
Which of the following sound waves represents an angry dog's low pitched and loud growl (Grrrrr-ruff)? 
a)
Wave 1
b)
Wave 2
c)
Wave 3 
99.

If a tuning fork is in a vacuum (no air) what would you expect to hear?

a)

nothing

b)

a soft sound

c)

a loud sound

100.

What type of wave is used to see this picture?

a)

sonar

b)

ultrasound

c)

frequency

d)

pitch

101.

Choose the correct order for how sound travels.

When a school bell rings, parts of the bell will vibrate, ________.

a)

causing your eardrum to vibrate, and then a message is sent to your brain.

b)

your eardrum to vibrate, which causes the air around you to vibrate, which causes your eardrum to vibrate.

c)

causing the air around it to vibrate, and then a message is sent to your brain.

d)

causing the air around it to vibrate, which causes your eardrum to vibrate, and then a message is sent to your brain.

102.
What type of mirror is this?
a)
Concave mirror
b)
Convex mirror
103.

A lens that is thicker in the center than at the edges

a)

concave

b)

cencentrate

c)

concentric

d)

convex

104.
Concave or Convex?
a)
Concave
b)
Convex
105.
The bending of a wave as it travels from one medium to another and as a result changes speed is called
a)
reflection
b)
refraction
c)
diffraction
d)
interference
106.
The change in the frequency of a sound because of the motion of the source is ____________________.
a)
echo
b)
Doppler Effect
c)
wavelenght
wavelength
d)
ellipse

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