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GRADE 7 QUARTER 3

Total questions: 55

Worksheet time: 43mins

Name
Class
Date
1.

how far an object has moved.

The popular measurement of distance is meters or kilometers.

a)

Distance

b)

Displacement

c)

Motion

2.

Have magnitude and direction

a)

Vector Quantities

b)

Scalar Quantities

3.

They are dependent on fundamental quantities ex. area, volume, density and force

a)

Derived Quantities

b)

Fundamental Quantities

4.

A spaceship can move 200 meters in 2seconds. What is the ship's velocity?

a)

50 m/s

b)

100 m/s

c)

20 m/s

5.

A person travels at a speed of 80 miles per hour. How far will he travel in 4.5 hours ?

a)

360 miles

b)

270 miles

c)

250 miles

6.

means that the speed stays the same throughout the entire distance.

a)

Changing Speed

b)

Constant Speed

7.

Between what points is the bus stopped?

a)

CD

b)

BC

c)

AB

8.

Between what points is the bus moving at a constant speed?

a)

AB AND EF

b)

OA AND DE

c)

BC

9.

A skateboarder is traveling at 8 m/s. He slows and comes to a stop in 4 sec. What was the acceleration?

(hint: it is a negative number)

a)

2 m/s2

b)

4 m/s2

c)

6 m/s2

10.
a)

Speed

b)

Velocity

c)

Acceleration

d)

Deceleration

11.

_____ waves NEED a medium to travel.

a)

Seismic

b)

Light

c)

Mechanical

12.

Radio Waves are an example of _________ waves.

a)

mechanical

b)

electromagnetic

c)

light

13.

The distance in between two waves.

a)

wave speed

b)

frequency

c)

wavelength

14.

Frequency is always measured in _________

a)

kilometers

b)

Hertz

c)

centimeters

15.

the number of waves that pass a certain point.

a)

wave speed

b)

frequency

16.

This is a high frequency wave. Which part of the wave is "B"

a)

crest/peak

b)

wavelength

c)

trough

17.

Look at this wave. "A" is which part of a wave?

a)

Crest/Peak

b)

Wave Speed

c)

Resting Point

18.

Which wave has the longest wave length?

a)

top wave

b)

bottom wave

19.
Any material that a wave travels through is called a ____________________.
a)
vibration
b)
compression
c)
medium
d)
crest
20.
The three types of mechanical waves are transverse, surface, and _______________ waves
a)
medium
b)
water
c)
longitudinal
d)
crest
21.
In longitudinal waves, the parts where the coils are spread apart are called what?
a)
rarefactions
b)
compressions
c)
mechanicals
d)
longitudes
22.
In a longitudinal wave, the parts where the coils are close together are called what?
a)
longitudes
b)
rarefactions
c)
compressions
d)
contractions
23.
What number represents the wavelength?
a)
1
b)
2
c)
3
d)
4
24.
What number represents the amplitude?
a)
1
b)
2
c)
3
d)
4
25.
Which travels faster, light or sound?
a)
light
b)
sound
26.
Sound travels FASTEST through which of these materials?
a)
Air
b)
Empty space
c)
Metal
d)
Water
27.
Sound is caused by? 
a)
force
b)
vibrations
c)
instruments
28.
What is frequency?
a)
the number of vibrations per second
b)
how high or low a sound is
c)
the loudness or softness of a sound
d)
the back and forth movement of matter
29.
Without matter, sound waves could not travel.
a)
True
b)
False
30.
how high or low a sound seems
a)
pitch
b)
wavelength
c)
amplitude
d)
scream
31.
Which travels faster, light or sound?
a)
Light
b)
Sound
32.
_____________________________ is an area of particles that moves outward in all directions from a vibrating object.
a)
frequency
b)
sound wave
c)
pitch
d)
intensity
33.
Sound will travel slowest through which of the following forms of matter?
a)
milk
b)
desk
c)
air
d)
door
34.
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.
35.
a)
Yes
b)
No
36.

How do you call objects that emit light?

a)

luminous

b)

non-luminous

c)

opaque

d)

transparent

37.

The following are natural sources of light in the surroundings, EXCEPT__________.

a)

fire

b)

flashlight

c)

jellyfish

d)

lightning

38.

Which of the following items best describes the nature of light?

a)

current and wave

b)

mass and particle

c)

point and wave

d)

wave and particle

39.

According to Louis de Broglie, why is light said to have a dual nature?

a)

It shows the properties of wave only.

b)

It exhibits the properties of reflection.

c)

It has both interference and polarization effect.

d)

It displays the properties of both wave and particle.

40.

The following objects are luminous, EXCEPT__________________.

a)

sun

b)

moon

c)

burning wood

d)

flashlight switched on

41.

What do you call the materials do not allow light to pass through instead it will be absorbed and converted into heat?

a)

Transparent

b)

Opaque

c)

Translucent

d)

Reflection

42.

What do you call the materials allow light to get through?

a)

Reflection

b)

Opaque

c)

Transparent

d)

Translucent

43.

Incandescent bulb, candle, matches, and gas lamps are examples of ____________.

a)

luminous

b)

non-luminous

c)

natural source

d)

man-made source

44.

Who is the scientist that proposed the Electromagnetic Theory of Light?

a)

Isaac Newton

b)

Christian Huygens

c)

Louis de Broglie

d)

James Clerk Maxwell

45.

Who is the scientist who believed that light behaves like a wave?

a)

Louis de Broglie

b)

Isaac Newton

c)

James Clerk Maxwell

d)

Christian Huygens

46.

Identify the image presented in the screen and it is the smallest unit of Matter.

(a)  

47.

Which of the following materials that is not a good electrical conductor?

a)
b)
c)
d)
48.

Which Law states that charges cannot be created nor destroyed, but can be transferred from one material to another.

a)

Law of Conversation of Charge

b)

Law of Conservation of Charge

c)

Law of Conservation of Change

d)

Law of Conservative of Change

49.

Electric charge is a property of matter that exists because of the excess or deficiency of electrons. Charging can be achieved by.

1. ________

2. ________

3. ________

(a)  

50.

An object with a greater number of electrons than protons is negatively charged. An object with more protons than electrons is (a)  

51.

This generator produces a static electric charge by rubbing two materials together (for example, a rubber belt and felt or metal). It is also presented thru the image shown.

V__ d_ Gr___f G_n_rator

(a)  

52.

What part of an atom consist of a Proton and Neutron and it is located in the inner part of an atom .

a)

Core

b)

Center

c)

Nucleus

d)

Electron

53.

Two unlike charges_________

a)

Attract each other

b)

Neutralize each other

c)

Repel each other

d)

Have no effect on each other

54.

Refer to the image presented in answering the Question. Which of the following pairs has the strongest electrical force of attraction?

a)

Welcru and Lokfu

b)

Xatzki and Melgi

c)

Zysmu and Melgi

d)

Kharmi and Xatzki

55.

Which branch of Science that we have covered this 3rd Quarter?

(a)  

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