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7A2 Review for 2nd end-term test

Total questions: 127

Worksheet time: 2hrs 54mins

Name
Class
Date
1.

What is at the center of every atom?

a)

An electron

b)

A compound

c)

A molecule

d)

A nucleus

2.

Which two particles make up the nucleus of an atom?

a)

Protons and Electrons

b)

Protons and Neutrons

c)

Molecules and Compounds

d)

Neutrons and Electrons

3.

In an atom, what is the number of protons equal to?

a)

The number of electrons.

b)

The number of neutrons.

c)

The number of molecules.

d)

The number of nuclei.

4.

The particles with no charge in an atom are the _______.

a)

electrons

b)

neutrons

c)

protons

d)

protons and neutrons

5.

The positively charged particles of an atom are the ________.

a)

electrons

b)

protons

c)

neutrons

d)

protons & neutrons

6.

The negatively charged particles of an atom are the ______.

a)

electrons

b)

protons

c)

neutrons

d)

protons & neutrons

7.

An electron has this charge

a)

positive

b)

negative

c)

neutral

8.

A neutron has this charge

a)

negative

b)

positive

c)

neutral

9.

A proton has this charge

a)

negative

b)

positive

c)

neutral

10.

A particle that moves around the nucleus is a(n)...

a)

Proton

b)

Neutron

c)

Electron

d)

Quark

11.

The center of an atom that holds protons and neutrons?

a)

model

b)

electron

c)

nucleus

d)

neutron

12.

What does the nucleus of an atom contain?

a)

Electrons and neutrons

b)

Protons and neutrons

c)

Neutrinos and positrons

d)

DNA and RN

13.

What number indicates an electron?

a)

1

b)

2

c)

3

d)

4

14.

What number indicates the nucleus?

a)

1

b)

2

c)

3

d)

4

15.

Which element has 31 protons ?

a)

Gallium 

b)

Germanium

c)

Gadolinium

d)

Polonium

16.

What is the mass number?

a)

the number of protons

b)

the sum of the number of protons and the number of neutrons in the nucleus of an atom 

c)

the number of electrons

d)

the number of neutrons

17.

What is the atomic number?

a)

number of protons

b)

number of neutrons

18.

Which element has 31 protons ?

a)

Gallium 

b)

Germanium

c)

Gadolinium

d)

Polonium

19.

Oxygen’s atomic number is 8. This means that an oxygen atom must have

a)

8 electrons

b)

8 protons

c)

8 neutrons

d)

a mass number of 8

20.

 What is the mass number of this element?

a)

5

b)

27

c)

32

d)

59

21.

Which one describes purity or pure element?

a)

it has two or more different types of atom

b)

it has one and the same type of atoms all throughout

c)

it is made up of sub-atomic particles

d)

it is a matter and has the different subatomic particles

22.

Gold is divided into 24 parts, with each single unit called a karat. The higher the karat, the purer the gold. How much is the concentration of gold in a 10 K neclace?

a)

99.5 %

b)

75 %

c)

50 %

d)

41.7 %

23.

Gold is divided into 24 parts, with each single unit called a karat. The higher the karat, the purer the gold. How much is the concentration of gold in a 14 K neclace?

a)

99.5 %

b)

75 %

c)

58.3 %

d)

41.7 %

24.

If a diamond has 1000 parts, it is said to be pure diamond. If the diamond is mixed with parts of other atoms, what is the concentration of a diamond if it has at least 800 parts?

a)

50 %

b)

60 %

c)

70 %

d)

80 %

25.

When there is more than one product they are mixed up together, this means that the product produced is ______.

a)

pured

b)

compound

c)

impured

d)

atom

26.

Some reactions would lead to impurity because it has two or more products during the reaction. Why do you think it is hard to produce pure product?

Select two correct responses.

a)

because some different types of atoms of compounds are mixed up

b)

because reactants are made up of two different compounds reacting together

c)

atoms do not react each chemically

d)

atoms are attracted to each other

27.

The weather is_________.

a)

The typical state of the atmosphere in a long period of time.

b)

The state of the atmosphere at a particular time. 

c)

The atmospheric condition usually for 30 years

d)

The atmospheric condition that is affected by temperature and precipitation

28.

The climate is______.

a)

The typical state of the atmosphere over a long period of time. 

b)

The state of the atmosphere at a particular time. 

c)

The atmospheric condition that is affected by temperature, cloudiness, humidity and precipitation

d)

The atmospheric condition that usually changes any time of the day

29.

Which among the choices best fits describe WEATHER?

Select all that applies

a)

The typical state of the atmosphere over a long period of time. 

b)

The state of the atmosphere at a particular time. 

c)

The atmospheric condition that is affected by temperature, cloudiness, humidity and precipitation

d)

The atmospheric condition that usually changes any time of the day

30.

Which among the choices that best fits describe CLIMATE?

Select all that applies

a)

The typical state of the atmosphere in a long period of time.

b)

The state of the atmosphere at a particular time. 

c)

The atmospheric condition usually for 30 years

d)

The atmospheric condition that is affected by temperature and precipitation

31.

Which factors that contribute to the CLIMATE of a region?

Select all that applies

a)

temperature

b)

cloudiness

c)

humidity

d)

precipitation

32.

Which factors that contribute to the WEATHER of a region?

Select all that applies

a)

temperature

b)

cloudiness

c)

humidity

d)

precipitation

e)

evaporation

33.

Take a closer look of the image on the left.

What is the forecast telling you?

a)

it tells you the weather specifically the temperature on Thursday and also shows the predicted weather for a week

b)

it tells you the predicted climate of a certain place for a week

c)

it tells you the weather of a certain place for a month

d)

it tells you the weather on Thursday showing the precipitation level for a week

34.

Take a closer look of the image on the left.

What is the forecast telling you?

a)

it is very hot

b)

it is cool

c)

it is extremely cold

d)

very low chance of rain

35.

The image on the left is a weather forecast on November 16, 2023.

Compare the weather at 3:15 of November 16 (220) to the weather in the evening.

What conclusion can you make about this forecast?

Select all that applies

a)

it will get a bit cold in the evening

b)

it is cloudy during the day

c)

it is extremely cold

d)

it gets warmer the next day

e)

the sky is clear and a bit cool at night

36.

The following diagram shows the ray diagram when a torch light is torched towards a mirror. Which of the following is the correct reflected ray?

a)

b)

c)

d)

37.

The following diagram shows a driver who could see the image of a vehicle behind him without turning his back.

Why?

a)

Light travels in a straight line

b)

Light is refracted

c)

Light is reflected

d)

Light travels in two different mediums

38.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

39.

which image represents reflection of light?

a)
b)
c)
d)
40.

When light hits a shiny surface and bounces back, it is an example of:

a)

Absorption

b)

Refraction

c)

Reflection

d)

Scattering

41.

In the diagram, which letter represents the angle of incidence?

a)

A

b)

B

c)

C

d)

D

42.

The ray of light that strikes a reflecting surface is called _____________.

a)

incident ray

b)

reflected ray

c)

normal ray

d)

none of the above

43.

According to the laws of reflection, if i = angle of incidence and r = angle of reflection

a)

i >  r

b)

r >  i

c)

i=r

d)

i is not equal to r

44.

Light travels through air, water, glass and many other materials. What path does it travel to get from one place to another?

a)

sideways

b)

back and forth

c)

straight

d)

up and down

45.

........... – the angle between the normal and the incident ray.

a)

Angle of incidence

b)

Angle of reflection

c)

Angle of coincidence

d)

Angle of direction

46.

Objects that reflect well are

a)

Matte surfaces

b)

Smooth, shiny surfaces

c)

Dark coloured surfaces

d)

Medium coloured surfaces

47.

The law of reflection states that

a)

Angle of incidence = Angle of reflection

b)

Angle of incidence = Angle of incidence

c)

Angle of reflection = Angle of translucence

d)

Angle of reflection = Angle of reflection

48.

Lateral inversion is

a)

When a light ray hits an object as a curved wave

b)

The term used to describe light rays reflecting off dark, matte surfaces

c)

The same as 'angle of incidence'

d)

When something is reflected in a plane mirror where left becomes right and right becomes left

49.

A concave mirror

a)

Curves inwards

b)

Curves outwards

c)

Curves sideways

d)

Curves in multiple directions

50.

A convex mirror

a)

Curves inwards

b)

Curves outwards

c)

Curves sideways

d)

Curves in multiple directions

51.

The angle of reflection is

a)

90 degrees

b)

55 degrees

c)

45 degrees

d)

135 degrees

52.

Refraction is

a)

The bending of light as it passes through the one substance at an angle

b)

A light beam shone in one end of an optical fibre and totally internally reflected at the other end

c)

The bending of light as it passes from one substance to another at an angle

d)

A type of convex object used in everyday life

53.

The above image is an example of a ____________. They happen because cool and hot air have a different ___________________________.

a)

Mirage; angle of incidence

b)

Optical fibre; refractive index

c)

Lateral inversion; angle of reflection

d)

Mirage; refractive index

54.

Refraction happens because light travels _____________ in glass or water compared to air

a)

Faster

b)

The same

c)

At the speed of sound

d)

Slower

55.

Total internal reflection is

a)

When lateral inversion occurs

b)

When the angle of reflection increases up to a critical point where all the light is reflected

c)

When the angle of incidence increases up to a critical point where all the light is reflected

d)

Used in surgery where a light is connected to an optical fibre

56.

A convex lens produces a _______ image whereas a concave lens produces a _______ image

a)

Virtual, real

b)

Virtual; diffused

c)

Real; refracted

d)

Real; virtual

57.

An example of total internal reflection is

a)

Diamond

b)

Looking down at someone in a swimming pool

c)

A camera inserted in a person's body during surgery

d)

The 'pool' of water seen when looking into the distance on a hot day

58.

The refractive index of a substance

a)

Is the degrees between the reflected ray and the normal

b)

Is a number that tells you how much the light bends when going from air into that substance

c)

Is a number that tells you how fast the light bends when going from air into that substance

d)

Is the degrees between an incident ray and the normal

59.

The angle of incidence is

a)

56 degrees

b)

124 degrees

c)

90 degrees

d)

34 degrees

60.

The incident ray is the light ray leaving the light source. The angle of ______________ correlates with the incident ray.

a)

Incidence

b)

Reflection

c)

Refraction

d)

Normal

61.

who discovered that white light could be split into different colors

a)

Edison

b)

Einstein

c)

newton

62.

what do we call the range of colours that can be seen in white light

(a)  

63.

Orders of colors

(a)  

64.

When light split into different colours

(a)  

65.

why light is shown as multiple colors after the prism?

(a)  

66.

when drops of water in the air cause dispersion of light

(a)  

67.
Red objects appear 'red' because:
a)
red objects are made from red materials
b)
red objects absorb red light
c)
red objects absorb all other colour except red light
d)
red objects don't reflect any light
68.
What colours is white light made from?
a)
Orange, Green, Pink, Magenta, Peach, Rose, Lemon
b)
Red, Orange Yellow, Green, Black, Indigo, Violet
c)
Red, Orange, Yellow, Green, Blue, Indigo, Violet
d)
Red, Orange, Yellow, Grey, Blue, Indigo, Violet
69.
Which image correctly shows how light would interact with the t-shirt and shorts?
a)

A

b)

B

c)

C

d)

D

70.
Why does this the t-shirt appear red and the shorts appear blue?
a)

The t-shirt reflects red light, the shorts reflect green light, other colours are absorbed.

b)

The t-shirt reflects blue light, the shorts reflect red light, other colours are absorbed.

c)

The t-shirt reflects red light, the shorts absorb yellow light, all other colours are reflected

d)

The t-shirt reflects red light, the shorts reflect blue light, other colours are absorbed.

71.
If you are using a green color filter, what color will you only see?
a)
blue
b)
green
c)
white
d)
red
72.
Which color reflects all light?
a)
White
b)
Black
c)
Orange 
d)
Green
73.
Which color absorbs all light?
a)
White
b)
Black
c)
Orange
d)
Green
74.
Which pair of colours do NOT combine to make the correct secondary colours?
a)

Red + Blue = Magenta

b)

Red + Green = Yellow

c)

Blue + Green = Cyan

d)

Red + Green = orange

75.
Which image correctly shows how a magenta filter and a yellow filter produce coloured light?
a)

A

b)

B

76.
What are the correct reasons why a magenta filter and a yellow filter produce coloured light?
a)
Magenta and yellow filters allow only one wavelength (colour) of light to pass through.
b)
Magenta and yellow filters allow primary colours of light to pass through. These colours mix to make yellow and magenta.
77.
In the image on the left we see the clothes of a boy under white light. How would the boys clothes look under green light
a)

A

b)

B

78.
In the image on the left we see the clothes of a boy under white light. How would the boys clothes look under red light
a)

A

b)

B

79.

Which colour combinations produce yellow?

a)

Red and Cyan

b)

Cyan and Magenta

c)

Red and Blue

d)

Red and Green

80.

In the additive colour mixing, select the secondary colours.

a)

Yellow

b)

White

c)

Magenta

d)

Cyan

81.

what colour will form when a blue light and green light shie on the same spot on a white paper?

a)

yellow

b)

blue

c)

black

d)

cyan

82.

Why does this flower appear magenta to our eyes?

a)

Only red and blue light are absorbed into our eye

b)

Because all colours of the visible spectrum are absorbed

c)

Because that's what colour the flower is

d)

Only red and blue light are reflected into our eye

83.

How will this object appear when looking at it through a blue filter?

a)

Blue

b)

Green

c)

Black

d)

Orange

84.

Which color will transmit through the filter?

a)

Red only

b)

Blue and Violet

c)

Green

d)

All colors

85.

A leaf is green. What does this tell you about the light that is being absorbed?

a)

The light is a UV ray.

b)

The light is not a part of the light spectrum.

c)

All colors are reflected except green.

d)

All colors are absorbed except green

86.

What type of galaxy is the Milky Way?

a)

Spiral

b)

Elliptical

c)

Irregular

d)

Transition

87.

One of the more common types of galaxies which have stars still forming within them are...

a)

Elliptical

b)

Spiral

c)

Irregular

d)

Transition

88.

This type of galaxy is generally considered to be older and is no longer forming stars.

a)

Spiral

b)

Irregular

c)

Elliptical

d)

Transition Galaxies

89.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular 
d)
Irrational
90.

A flat, disk-shaped galaxy with a central bulge and winding "arms" that extend outward.

a)

irregular galaxy

b)

spiral galaxy

c)

elliptical galaxy

d)

random galaxy

91.
The type of galaxy that is composed of the older stars and low-mass stars.
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Constellation
92.
The most abundant type of galaxy in the universe is an...
a)
Spiral Galaxy
b)
Elliptical Galaxy
c)
Irregular Galaxy
93.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular 
d)
Irrational
94.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
95.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
96.
Our galaxy is called the
a)
Earth Nebula
b)
The Hubble Galaxy
c)
The Milky Way
d)
The Snickers
97.
Place these objects in order from smallest to largest.
a)
Planets, solar system, universe, galaxy
b)
Solar system, planets, galaxy, universe
c)
Planets, solar system, galaxy, universe
d)
Galaxy, solar system, planets, universe
98.
What are galaxies held together by?
a)
Gravitational Attraction
b)
Stars
c)
Other galaxies
d)
Dust and Gas
99.
The __________ has planets, moons, comets, and asteroids.
a)
solar system
b)
earth
c)
rotation
d)
United States
100.
All of Earth experiences night at the same time.
a)
True
b)
False
101.

Which element makes up the most composition of the Sun?

a)

Helium

b)

Oxygen

c)

Hydrogen

d)

Carbon

102.

I am located between Mars and Jupiter.

a)

Comet belt

b)

Asteroid belt

c)

Meteor belt

d)

Stars

103.

If you took all the asteroids in the main belt and lumped them together, how large would it be?

a)

Smaller than our moon

b)

Slightly larger than Earth

c)

Close to the size of Jupiter

d)

About the size of a blue whale

104.

Ceres is the largest asteroid, and it is spherical.

a)

True, it retains is shape because of it's massive size.

b)

False, it is only a midsize asteroid.

c)

False, it is lumpy like deimos

d)

False, it is actually a moon.

105.

Do all asteroids live in the main belt?

a)

No, there are some that have orbits that cross Mars and Earth

b)

Yes, once an asteroid leaves the main belt it becomes a comet.

c)

Yes, asteroids are pulled into the main belt through gravity and cannot escape it.

d)

No, asteroids sometimes leave and come back to the main belt after visiting neighboring planets.

106.
Huge chunks of rock and metal (some measuring miles wide) are believed to be left-over pieces of planets and moons called:
a)
Comets
b)
Meteors
c)
Asteroids
d)
Meteroids
107.

How many stars are in a galaxy.

a)

billions

b)

thousands

c)

hundreds

d)

Ten

108.
What purpose do carbohydrates serve?
a)
They provide us with vital energy
b)
They assist with growth and repair
109.
What nutrient would you eat to help with growth and repair?
a)
Mineral
b)
Fibre
c)
Protein
110.
Which of these statements about dietary fibre is correct? 
a)
It is a plant material that is easily digested by the body
b)
It is a plant material that cannot be digested by the body
111.
What are the two types of lipids? 
a)
Mineral and oils
b)
Fats and oils
c)
Protein and oils
112.
Which nutrient helps to provide insulation within the body?
a)
Fat
b)
Fibre
c)
Minerals
113.
Everyone needs vitamins and minerals in small quantity.
a)
true
b)
false
114.
Which mineral is vital for bone and teeth health?
a)
Iron
b)
Calcium
c)

Vitamin C

115.
Which of the following is a carbohydrate?
a)
b)
116.
Which of the following contains lipids?
a)
b)
117.
Which of the following is high in fats?
a)
b)
118.
Which one of the following contains the most fibre?
a)
Biscuits
b)
pea
119.
Which contains the most protein?
a)
b)
120.
Having foods rich in this vitamin will prevent Beriberi disease.
a)
Vitamin A
b)
Vitamin B
c)
Vitamin C
121.

If you suffer from anaemia you should eat foods rich in _____.

a)
Calcium
b)
Iron
c)
Carbohydrates
d)
Vitamin A
122.
Lack of exposure to sunlight may lead to deficiency of this ______________
a)
Vitamin A
b)
Vitamin D
c)
Vitamin E
123.
Deficiency of which nutrient leads to this disease?
a)
Vitamin A
b)
Vitamin D
c)
Vitamin E
d)
Vitamin C
124.
Infection and bleeding of gums can be prevented by having foods rich in ___________.
a)
Iron
b)
Calcium
c)
Vitamin C
125.
Deficiency of __________ causes Night blindness.
a)
Vitamin A
b)
Vitamin D
c)
Vitamin E
d)
Vitamin C
126.
__________ causes weak bones that do not form properly, and can be caused by a lack of calcium and vitamin D.
a)
anemia
b)
scurvy
c)
Rickets
127.

_____________can be used as a store of energy in animals.

a)
carbohydrates and fats
b)
protein
c)
fibre

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