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Grade 7 Integrated Science

Total questions: 50

Worksheet time: 45mins

Name
Class
Date
1.

Write short notes on the following.

  1. 1. Silt

  2. 2. Gravel

  3. 3. Clay

4 lines
2.

The composition of the soil consists of various materials that comes together to create a complex mixture capable of supporting plant life, list and explain the components.

4 lines
3.

list the functions of the below components.

  1. 1. vacoule

  2. 2. chloroplast

  3. 3. cell membrane

4 lines
4.

Which type of soil has the lowest rate of permeability?

a)

sand

b)

silt

c)

clay

d)

loam

5.

Soil is made of ---

a)

weathered rocks and minerals.

b)

dead plants and animals.

c)

air and water.

d)

all of the above

6.

Which layer of soil is on the bottom of a soil profile?

a)

topsoil

b)

subsoil

c)

bedrock

d)

humus

7.

Which of the following is NOT one of the three layers of soil?

a)

topsoil

b)

undersoil

c)

subsoil

d)

bedrock

8.

Humus is ---

a)

the dead parts of plants and animals in soil.

b)

A food we eat with pretzels.

c)

The tiny particles inside of soil.

d)

The roots that come off of a plant and live in soil.

9.

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?

a)

sand

b)

silt

c)

clay

d)

humus

10.

What is the layer of soil just below the topsoil?

a)

bedrock

b)

subsoil

c)

topsoil

d)

humus

11.
Which layer of soil are these roots growing in?
a)
subsoil
b)
topsoil
12.

Horizontal layers of soil are called ---

a)

Soil profiles

b)

Soil horizons

13.

The texture of soil depends mainly on ---

a)

the types of plants that grow in the soil.

b)

the size of the particles in the soil.

c)

the color of the soil.

d)

the number of worms in the soil.

14.

Matter is anything that has ________________and _____________.

a)

mass and density

b)

mass and takes up space

c)

volume and density

d)

density and energy

15.

The amount of matter in an object is called ___________.

a)

Volume

b)

Density

c)

Mass

d)

Energy

16.

What is the smallest piece of matter?

a)

Atom

b)

Molecule

c)

Compound

d)

Density

17.

What is a substance that cannot be broken down into another substance?

a)

molecule

b)

compound

c)

mixture

d)

element

18.

What is a group of two or more atoms held together by a chemical bond?

a)

molecule

b)

mixture

c)

compound

d)

element

19.

What is a group of two or more different elements held together with a chemical bond?

a)

mixture

b)

atoms

c)

molecule

d)

compound

20.

Which of the following do atoms not contain?

a)

protons

b)

neutrons

c)

positrons

d)

electrons

21.

What is the amount of space an object takes up called?

a)

mass

b)

volume

c)

density

d)

temperature

22.

Pick all examples of a living thing

a)

A human

b)

A rock

c)

A dog

d)

Sand

23.
Is fire living, nonliving, or once alive? 
a)
Once Alive
b)
Nonliving
c)
Alive
d)
None of the above
24.
Is bacteria living, nonliving, or once alive? 
a)
Living
b)
Nonliving
c)
Once alive
d)
None of the above
25.

Our bodies use this Bio-molecule as it's building material. Often found in meats, eggs, and dairy products.

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Baconidis

26.

I am the Bio-molecule responsible for mapping out everything. I am like a blue print to a living organism.

a)

Nucleic Acids

b)

Lipids

c)

Proteins

d)

Carbohydrates

27.
The invention of the microscope made it possible for people to discover and learn about
a)
Plants
b)
Skin 
c)
Animals 
d)
Cells
28.
The ___ is the basic unit of sturucture and function of organisms
a)
atom
b)
cell
c)
matter
d)
all other answers are correct
29.

A flexible covering that protects the inside of a cell from the environment outside a cell.

a)

cell wall

b)

cell membrane

c)

cytoplasm

d)

cytoskeleton

e)

nucleus

30.

Stiff structure outside the cell membrane

a)

Cell wall

b)

cell membrane

c)

cytoplasm

d)

cytoskeleton

e)

nucleus

31.

Fluid inside of a cell that contains salts and other molecules

a)

Cell wall

b)

cell membrane

c)

cytoskeleton

d)

cytoplasm

e)

mitochondria

32.

Organelle used for energy production in the cell

a)

ATP

b)

nucleus

c)

ribosomes

d)

mitochondria

e)

golgi bodies

33.

Organelle found in plant cells used to convert sunlight into energy

a)

mitochondria

b)

nucleus

c)

ribosomes

d)

golgi bodies

e)

chloroplasts

34.

The following are some safety rules in a laboratory. Which one is not correct?

a)

Do not eat or drink in the laboratory

b)

Do not report any injury, however small, to the teacher

c)

Do not taste chemicals in the laboratory

d)

Do not run in the laboratory

35.

Which of the following is the correct laboratory rule?

a)

Eating in the laboratory while doing practical during lunch time

b)

Running in the laboratory when he is in a hurry

c)

Poking the electrical power points with sharp objects

d)

Using the apparatus in the laboratory only when told to do the science teacher

36.

Which of the following is Vernier Calliper?

a)
b)
c)
d)
37.

Identify this laboratory apparatus that measures mass

a)

Spring balance

b)

Iron stand

c)

Funnel

d)

Electronic balance

38.

This measure the amount of liquid.

a)

Erlenmeyer Flask

b)

Graduated Cylinder

c)

Beaker

d)

Test tube

39.

This holds test tubes when heating

a)

Wire gauze

b)

Dropper

c)

Test tube holder

d)

Syringe

40.

Name the use of the give picture.

a)

used for the measurement of an amount of a liquid

b)

mainly used to store and mix solutions

c)

used for transferring liquids from one container to another

41.
Sac within the cytoplasm that is full of fluid; plants have one large; stores food, water, etc.
a)
vacuole
b)
cell wall
c)
lysosome
d)
ribosome
42.
Which organelle uses energy from sunlight to make sugar?
a)
mitochondria
b)
nucleus
c)
chloroplasts
d)
vacuoles
43.
I store water in both plant and animal cells. What am I?
a)
cytoplasm
b)
ribosomes
c)
vacuole
d)
lysosomes
44.
I am only found in a plant cell. What am I?
a)
cell wall
b)
mitochondria
c)
cytoplasm
d)
chloroplast
45.
What is the picture
a)
ribosome
b)
nucleus
c)
cell wall
d)
mitochondrion
46.

The outside of an animal cell is called…

a)

Plasma membrane

b)

Cell Wall

c)

Cytoplasm

d)

Mitochondria

47.

The mitochondria…

a)

Creates energy for the cell

b)

builds DNA for the cell

c)

Makes cytoplasm

d)

Digests cell waste

48.

Which part on the diagram decides what goes in and out of the cell?

a)

1

b)

4

c)

2

d)

3

49.

The _____________ is a gel-like fluid that fills plant and animal cells. It holds the organelles in place and gives each cell its shape.

a)

Cytoplasm

b)

Cell Membrane

c)

Cell Wall

d)

Chloroplast

50.

Which organelle is the command center for eukaryotic (plant and animal) cells and is referred to as the "brain"?

a)

Cell wall

b)

Nucleus

c)

Mitochondria

d)

Lysosome

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