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Worksheets

for 8th grade

Total questions: 60

Worksheet time: 31mins

Name
Class
Date
1.

Скажешь «не приходи!» — всё равно приходит. Скажешь «не уходи!» — всё равно уходит. Что это такое?

a)

время

b)

солнце

c)

слово

d)

обещание

2.

Вы сидите в самолете, впереди вас лошадь, сзади автомобиль. Где вы находитесь?

a)

машина

b)

карусель

c)

на земле

d)

на небе

3.

когда нужно бросаешь а когда не нужно поднимаешь, что это?

a)

карты

b)

удочка

c)

якорь

d)

мусор

4.

что можно видеть закрытыми глазами , что это?

a)

фильм

b)

ничего

c)

сны

d)

радуга

e)

темнота

5.

из какой посуды не едят?

a)

из пустой

b)

из старой

c)

из грязной

d)

из чистой

6.

что тяжелее килограмм ваты или килограмм железа?

a)

ваты

b)

железо

c)

ничего

d)

оба равны

7.

у квадратного стола отпилили угол.

сколько теперь углов у стола?

a)

6

b)

3

c)

4

d)

5

8.

книга относится к чтению так же как вилка к

....?

a)

рисованию

b)

еде

c)

тарелке

d)

ложке

9.

Тиму нравится 25, но не 24; ему нравится 400 но не 300; ему нравится 144 но не 145 . какое из следующих чисел ему понравится?

a)

200

b)

10

c)

1600

d)

124

10.

Кролик больше всего похож на…

a)

белку

b)

собаку

c)

кенгуру

d)

кошку

11.

Hydrogen is located in what group of the periodic table?

a)

group 2

b)

group 3

c)

group 4

d)

group 1

12.

How many neutrons are present in 1 atom of chlorine?

a)

18

b)

20

c)

32

d)

10

13.

There are how many electrons in 1 neutral atom of copper?

a)

28 electrons

b)

27 electrons

c)

29 electrons

d)

26 electrons

14.

The atomic umber for hydrogen is?

a)

2

b)

1

c)

3

d)

4

15.

Chlorine has how many electron shells?

a)

5

b)

2

c)

3

d)

7

16.

How many electron shells does oxygen have?

a)

1

b)

4

c)

3

d)

2

17.

The reaction between an acid and a base is called what?

a)

Sedimentation

b)

Crystallization

c)

Neutralization

d)

Exaporation

18.

There are how many valence electrons in a neutral oxygen atom?

a)

6

b)

3

c)

12

d)

8

19.

What chemical process occurs in cells to release energy?

a)

Respiration

b)

Oxidation

c)

Pespiration

d)

Nutrition

20.

Oxygen is best described as a?

a)

Rare Element

b)

Noble Gas

c)

Halogen

d)

Nonmetal

21.

Find the word whose underlined part is pronounced differently from the others?

a)

comber

b)

tomb

c)

bomb

d)

homb

22.

After I ____ the book, I realized that science is useful for humankind.

a)

read

b)

play

c)

take

d)

cut

23.

My house _____ a small garden.

a)

Has got

b)

Have got

c)

Is

d)

Was

24.

Sam: There are two books on the table?

Kim: No, there aren't. ______ one book.

Sam: Oh, I see. The word to fill in the blank is:

a)

there are

b)

there is

c)

there has

d)

those are

25.

She always ______ at 5 AM every day.

a)

get up

b)

got up

c)

gets up

d)

gotten up

26.

This is Nick, and this is Carla. _____ in my class.

a)

they is

b)

they are

c)

them is

d)

them are

27.

Susan _____ a novel after school every day.

a)

read

b)

has read

c)

was read

d)

reads

28.

Ronnie loves playing basketball with _____ friends twice a week.

a)

him

b)

their

c)

his

d)

hers

29.

The students ________ English and French at school.

a)

study

b)

studies

c)

is study

d)

was study

30.

You and I _____ best friends.

a)

am

b)

are

c)

is

d)

was

31.

By what number should we multiply -8/13, so that the product is  64?

a)

-100

b)

100

c)

-104

d)

104

32.

x= (a+b)/2 is a rational number  (a > b) ,then

a)

a > x > b

b)

a > b > x

c)

x > a> b

d)

x > a , x > b

33.

Which of the following is correct?

a)

rational numbers are not closed under addition.

b)

rational numbers are not closed under addition.

c)

rational numbers are closed under multiplication

d)

rational numbers are closed under division

34.

The reciprocal of 0 is

a)

1

b)

-1

c)

0

d)

not defined

35.

which of  the following is incorrect?

a)

Subtraction of rational number is commutative.

b)

Addition of rational number is commutative

c)

1 is the identity for multiplication of rational numbers

d)

Multiplication of rational number is commutative

36.

The multiplicative inverse of  -1 2/3 is

a)

3/5

b)

-3/5

c)

-5/3

d)

5/3

37.

4/9×2/7

a)

2/54

b)

8/63

c)

4/63

d)

2/63

38.

solve the problem (х + 3) · (х + 4) = 0

a)

– 3 и – 4

b)

3 и 4

c)

– 3 и 4

d)

другие ответы

39.

Which number is rational

a)

0.12131415

b)

2/3

c)

Square root of 5

d)

pi

40.

Which number is irrational?

a)

square root of 3

b)

9/500

c)

7/9

d)

-0.9

41.

Fluids can also include__ and__. 

a)

solids and liquids

b)

liquids and gases

c)

solids and gases

d)

liquids

42.

 What is the equation used to calculate pressure?

a)

pressure= force/mass

b)

pressure=area/force

c)

pressure =mass/volume

d)

pressure=force/area

43.

What is the unit of measurement for pressure?

a)

pascal

b)

milliters

c)

grams

d)

meters

44.

Pressure decreases when the surface area over which a force is applied increases

a)

True

b)

False

45.

Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.

a)

True

b)

False

46.

 Which of the statements is true?

a)

The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.

b)

The bottom of the shoe exerts the same pressure as the bottom of the boot.

c)

The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.

47.

When you increase your depth under water, the water pressure on your body

a)

increases

b)

stays the same

c)

decreases

48.

Force that resists movement between 2 objects in contact

a)

Speed

b)

Acceleration

c)

Friction

d)

Velocity

e)

Inertia

49.

What is force?

a)

A push exerted on an object

b)

A pull exerted on an object

c)

A push or pull exerted on an object

d)

Nothing

50.

 

 

A force F acts on 4 different objects, having areas given below. In which case, the pressure exerted will be maximum?

a)

20m2

b)

10m2

c)

50m2

d)

100m2

51.

Materials can move across cell membrane by :

a)

active transport

b)

passive transport

c)

diffusion

d)

all of them

52.

What is a tissue ?

a)

cell food

b)

cell wall

c)

cell membrane

d)

Group of cells performing a specific function.

53.

 

The jelly like substance between the nucleus and cell membrane is called ?

a)

Tissue

b)

cell wall

c)

Cytoplasm

d)

None of these

54.

A cell with definite nucleus and nuclear membrane is called ?

a)

Eukaryote

b)

Cell wall

c)

Prokaryote

d)

None of these

55.

The sedimentation of constant of ribosome is generally 70s.IT breaks up into two subunits whose sedimentation constants are ?

a)

50S and 30S

b)

50S and 40S

c)

50S and 50S

d)

60S and 70S

56.

_____ is a unit of inheritance in living organisms.

a)

Tissue

b)

Cell wall

c)

Gene

d)

None of these

57.

  

Which of the following cells have irregular shape ?

a)

White blood cells

b)

Amoeba

c)

Both A and BNone of these

d)

None of these

58.

 

Plasma membrane is composed of ?

a)

Protein and lipids.

b)

Proteins

c)

Lipids

d)

Cellulose

59.

Function of neuron in human body is

a)

digestion and assimilation of food

b)

protecting the body from sudden shocks

c)

control and coordination of different body parts

d)

all of these

60.

Extra chromosomal DNA is found in prokaryotic cells is called:

a)

resistance

b)

transmid

c)

helix

d)

plasmid

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