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YEAR 7 SCIENCE

Total questions: 136

Worksheet time: 3hrs 34mins

Name
Class
Date
1.

If a laboratory fire erupts, immediately _________.

a)

Run for the fire extinguisher.

b)

Notify your instructor.

c)

Throw water on the fire.

d)

Open the windows.

2.

If a lab experiment is not completed you should _______.

a)

Discuss the issue with your teacher.

b)

Sneak in after school and work alone.

c)

Come in durin glunch and finish.

d)

Make up some results.

3.

You are heating a substance in a test tube. Always point the open end of the test tube ________.

a)

Toward yourself.

b)

Toward your lab partner.

c)

Toward another classmate.

d)

Away from all people.

4.

You are heating a piece of glass/metal and now want to pick it up. You should ________.

a)

Use a rag or paper towel.

b)

Pick up the end that looks cooler.

c)

Use tongs.

d)

Pour cold water on it.

5.

Personal eyeglasses provide as much protection as ________.

a)

A face shield.

b)

Safety goggles/glasses.

c)

Splash proof chemical goggles.

d)

None of these.

6.

The following footwear is required in the lab ________.

a)

Sandals.

b)

Open-toe shoes.

c)

Closed-toe shoes.

d)

Shoes appropriate for the weather.

7.

True or False:

IF acid splashes on your skin you should rinse ONLY with lots of water, no soap.

a)

True

b)

False

8.

True or False:

Return all unused chemicals to their original containers.

a)

True

b)

False

9.

True or False:

Chipped or cracked glassware is ok to use.

a)

True

b)

False

10.

You are required to wear goggles when ________.

a)

chemicals are used.

b)

heated glass is used.

c)

working with fire.

d)

chemicals, heated glass, or fire are being used.

11.

Conduct yourself in a ______________ manner at all times.

a)

childish

b)

responsible

c)

horrible

d)

lethargic

12.

Follow all __________ and _________ instructions carefully.

a)

written/verbal

b)

online/written

c)

verbal/online

d)

singing/dancing

13.

Keep your work area ___________ at the end of the lab.

a)

messy

b)

dirty

c)

neat and clean

d)

disorganized

14.

Do not remove __________ from the science classroom without the teacher's permission.

a)

posters

b)

candy

c)

pencils

d)

supplies

15.

Do not __________ any of the equipment until instructed.

a)

trash

b)

clean up

c)

touch

d)

play with

16.

Do not eat ___________ during the lab.

a)

Takis

b)

pizza

c)

tacos

d)

ANYTHING

17.

Wash your hands with soap and water ________________.

a)

before the lab

b)

before coming to school

c)

before leaving class

18.

Report any accidents to your teacher ______________.

a)

later

b)

immediately

c)

tomorrow

d)

October 13th

19.

Learn where the safety ___________ is and how to use it.

a)

equipement

b)

dance

c)

patrol

d)

leader

20.

Privilege for the next lab is ___________ is lab safety procedures and lab safety rules are broken.

a)

gained

b)

lost

c)

transferred

d)

granted

21.
When is it OK to eat or drink in the lab?
a)
Always
b)
Never
22.
What should you do if you break glass in the lab?
a)
Tell the teacher.
b)
Sweep up the glass.
c)
Pick up the glass with your hands.
d)
Ignore it; the teacher will clean it up when she sees it later.
23.
When should you tie back long hair or baggy clothing?
a)
When working with chemicals
b)
When working with a Bunsen burner
c)
When doing dissections.
d)
Any time you are working in the lab.
24.
I must follow all instructions, written and verbal, about the laboratory procedures given by the teacher.
a)
True
b)
False
25.
I will perform only those activities that have been authorized by the instructor.
a)
True
b)
False
26.
I will immediately notify the instructor only about major accidents.
a)
True
b)
False
27.
Horseplay, jokes, and pranks are appropriate in the science classroom at any time.
a)
True
b)
False
28.
Part of lab safety includes reading the lab procedure...
a)
before doing the lab
b)
while doing the lab
c)
after doing the lab
d)
only if you think you really need it
29.
When should safety goggles be worn?
a)
at all times in the lab
b)
when you feel like it
c)
when liquids could splash into your eyes OR when using glassware
30.
You should never ______ chemicals in the lab. 
a)
taste
b)
touch
c)
smell
d)
all of the above
31.
If you are not sure what to do during a lab activity:
a)
guess
b)
change lab partners
c)
ask a teacher
d)
just sit quietly and do nothing
32.
Keeping your work area neat and clean is important because:
a)
My teacher is a neat-freak
b)
I won't lose my supplies in the clutter.
c)
It keeps the room from looking messy.
d)
It helps prevent accidents.
33.
Helping to clean up the lab or classroom is the job of
a)
old students.
b)
transfer students.
c)
each and every student.
d)
only the teacher.
34.
When in the lab you should wear...
a)
open-toed shoes.
b)
sandals.
c)
closed-toes shoes.
d)
no shoes.
35.
When heating a substance in a test tube, the test tube should be pointed
a)
Towards you
b)
Away from you and others
c)
Away from others
d)
Towards others and away from you
36.
Keep your work area free of all unnecessary books and papers
a)
TRUE
b)
FALSE
37.
It’s okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.
a)
True
b)
False
38.

If a fire erupts, immediately

a)

notify the teacher.

b)

run for the fire extinguisher.

c)

throw water on the fire.

d)

open the windows.

39.

If you do not understand a direction or part of a laboratory procedure, you should

a)

figure it out as you do the lab.

b)

try several methods until something works.

c)

ask the teacher before proceeding.

d)

skip it and go on to the next part.

40.

When you finish working with chemicals, biological specimens, and other lab substances, always

a)

treat your hands with skin lotion.

b)

wash your hands thoroughly with soap and water.

c)

wipe your hands on a towel.

d)

wipe your hands on your clothes.

41.

An organism that breaks down a dead organism

a)

decomposer

b)

producer

c)

prey

d)

habitat

42.

Eats both plants and animals

a)

herbivore

b)

omnivore

c)

carnivore

43.

Shows how living things get energy and food

a)

ecosystem

b)

food chain

44.

An animal that eats only other animals

a)

herbivore

b)

carnivore

c)

omnivore

45.

Needs to eat other living organisms to gain their energy.

a)

producer

b)

consumer

46.

A place where an organism lives.

a)

habitat

b)

host

47.

Animal that eats only plants

a)

omnivore

b)

herbivore

c)

carnivore

48.

Animal that is killed and eaten by other animals

a)

habitat

b)

prey

c)

ecosystem

49.

All the interacting living and non-living things in an area

a)

ecosystem

b)

habitat

50.

They use the sun's energy to create their own fod.

a)

consumer

b)

producer

51.

Where does the food chain begin?

a)

producer

b)

consumer

52.

A vulture is a scavenger.

a)

True

b)

False

53.

All the interacting living and nonliving things in one area is an ecosystem.

a)

True

b)

False

54.

A mushroom and a worm are decomposers.

a)

True

b)

False

55.

Animals are consumers.

a)

True

b)

False

56.

A species is endangered when...

a)

Its habitat becomes an ecosystem.

b)

Very few of its kind is left.

57.

A predator is an animal that...

a)

is not part of a food chain.

b)

hunts and eats other animals.

c)

is an herbivore

58.

Worms are important to food chains, because they

a)

give nutrients to the soil

b)

make other plants die

59.

An energy pyramid gets smaller from the bottom to the top because

a)

the bottom has the least energy

b)

Energy is used up at each level.

60.

Which one of these animals uses camouflage?

a)

polar bears

b)

leopards

c)

turtles

d)

all of the above

61.

Which one of these animals is a carnivore?

a)

black bear

b)

cheetah

c)

lion

d)

all of the above

62.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
63.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
64.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
65.

What are the organisms that break down dead plants and animals?

a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
66.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
67.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
68.
What's the role of consumers in a food chain?
a)
Use sunlight to make food 
b)
Eat other species and keep them from overpopulating
c)

Break down dead plants and animals

d)
Add nutrients to the soil
69.
What is the role of decomposers in a food chain?
a)
Use sunlight to make food
b)
Eat other organisms to gain energy
c)
Make the food for the whole food chain
d)
Break down dead organisms and add nutrients to the soil
70.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
71.
Which type of consumer eats plants only?
a)
Herbivores
b)
Omnivores
c)
Carnivores
d)
Scavengers
72.
Which type of consumer eats meat only?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
73.
Which type of consumer eats meat and plants?
a)
Herbivores
b)
Carnivores
c)
Omnivores
d)
Plants
74.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
75.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
76.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
77.
Which of the following is a producer?
a)
Maple tree
b)
Sunfish
c)
Bunny
d)
Bear
78.
Producers get their energy from the ______.
a)
water
b)
Sun
c)
eating animals
d)
eating plants
79.
Which organism is a decomposer?
a)
grass
b)
mouse
c)
mushroom
d)
caterpillar
80.
Which food chain is in the correct order?
a)
cat, grass, bird, snail
b)
bird, snail, grass, cat
c)
grass, snail, bird, cat
d)
grass, cat, bird, snail
81.
Humans are considered...
a)
consumers
b)
decomposers
c)
producers
82.

This method separates dissolved substances based on differences in how well they dissolve in a solvent.

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

83.

This method requires the use of a condenser.

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

84.

Filtration can be used to separate the atoms in a compound.

a)

TRUE

b)

FALSE

85.

Substances in a mixture can be separated by physical methods.

a)

TRUE

b)

FALSE

86.

This method separates substances due to differences in the sizes of their particles.

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

87.

If a substance is insoluble in water, it ___________.

a)

dissolves in water

b)

cannot dissolve in water

c)

forms a solution when mixed with water

d)

cannot be separated from water

88.

Which method(s) separate substances based on them having different boiling points? (Select all that apply).

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

89.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

90.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

91.

Which method has a solid and a gas as the final products?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

92.

Lemonade, coke, and salt water are all examples of _________.

a)

Solutions

b)

Mixtures

c)

Pure Substances

d)

Factors of solubility

93.

A combination of substances that dissolve into one another--they are evenly mixed so that individual parts cannot be seen or separated.

a)

solutions

b)

mixtures

c)

observations

94.

________ is the ability to dissolve in water.

a)

Conductivity

b)

Magnetism

c)

Solubility

d)

Reflectivity

95.

Two or more materials mixed together that can always be separated into their component parts.

a)

solutions

b)

pure substances

c)

observations

d)

mixtures

96.

Salads, tacos, cereals are all examples of ___________.

a)

solutions

b)

mixtures

c)

properties

d)

observations

97.

Is this Salad an example of a Mixture?

a)

Yes

b)

No

98.

Is Trailmix an example of a Mixture?

a)

Yes

b)

No

99.

Are these Jellybeans an example of a Mixture?

a)

Yes

b)

No

100.

The salt dissolved in the water after being mixed evenly.

Is this an example of a Solution?

a)

Yes

b)

No

101.

Is Lemonade an example a solution?

a)

Yes

b)

No

102.

The water and oil separate from each other.

Is this an example of a Solution?

a)

Yes

b)

No

103.

Even after mixing the rocks sink to the bottom and do not dissolve.

Is this an example of a solution?

a)

Yes

b)

No

104.

A combination of two or more substances is called a...

a)

Salad

b)

Solution

c)

Mixture

105.

To mix together is to...

a)

Separate

b)

Combine

c)

Solution

106.

To pull or take apart is to...

a)

Separate

b)

Mixture

c)

Solution

107.

The purpose of a simple machine is to make work easier by allowing for a push or pull to occur over an increased distance.

a)

True

b)

False

108.

Which simple machine is a wheel on an axle or shaft that is designed to support movement and change of direction?

a)

Wheel-and-axle

b)

Wedge

c)

Pulley

d)

Lever

109.

Which simple machine consists of a sloping surface, used for raising heavy objects, or sliding objects down?

a)

Wedge

b)

Inclined Plane

c)

Pulley

d)

Screw

110.

Why are levers useful?

a)

For seesawing

b)

Allow us to measure the force of an object

c)

Helps lift weight at one point of its length

d)

All of the above

111.

Which of the items lifted below can be considered a wedge?

a)

A Pencil

b)

A hammer

c)

An axe

d)

Two inclined planes put together

112.

Which simple machine is an inclined plane that is wrapped around a pole?

a)

Screw

b)

Pulley

c)

Wedge

d)

Wheel-and-axle

113.

Why are simple machines "simple"?

a)

They reduce the effort required to perform a simple task. Less force can be applied.

b)

They are actually quite complicated.

c)

You can easily put two pieces of wood together.

d)

Splitting through wood is much faster.

114.

Which simple machine is this?

a)

Pulley

b)

Wheel-and-axle

c)

Inclined Plane

d)

Lever

115.

Where might a screw be used?

a)

A bottle cap

b)

A Lightbulb

c)

Cell Phone Charger

d)

All of the above

116.

Which simple machines are present?

a)

Wedge

b)

Wheel-and-axle

c)

Inclined Plane

d)

Lever

117.

Is that a machine ?

a)

Yes

b)

No

118.

Is that a machine ?

a)

Yes

b)

No

119.

Is that a machine ?

a)

Yes

b)

No

120.

Cual de las siguientes imágenes es una polea:

a)
b)
c)
d)
121.

Existen dos tipos básicos de poleas:

a)

Fría y móvil.

b)

Polea y móvil.

c)

Fija y quieta.

d)

Fija y móvil.

122.

La carretilla tiene

a)

ruedas

b)

peso

c)

paja

123.

Selecciona las dos imágenes que son maquinas simples.

a)
b)
c)
d)
124.

Selecciona la maquina que no usa la rueda para su funcionamiento.

a)
b)
c)
d)
125.

¿Cuál de las tres es un plano inclinado?

a)
b)
c)
126.

¿Cuál de las siguientes imágenes no es una máquina simple?

a)
b)
c)
d)
127.

La bicicleta es una máquina...

a)

Simple

b)

Compuesta

128.

Una grúa es una máquina...

a)

Simple

b)

Compuesta

129.

Un tornillo es una máquina...

a)

Compuesta

b)

Simple

130.

Identifica el plano inclinado

a)
b)
c)
d)
131.

Identifica la palanca

a)
b)
c)
d)
132.

Identifica la polea

a)
b)
c)
d)
133.

Identifica la rueda

a)
b)
c)
d)
134.

Es una rampa que sirve para subir y bajar objetos

a)
b)
135.

Esta maquina simple es un ejemplo de:

a)

Rueda.

b)

Palanca.

c)

Polea.

d)

Plano inclinado.

136.

Observe la imagen mencione a que tipo de maquinaria simple se refiere.

a)

Palanca

b)

Torno

c)

Plano inclinado

d)

Polea

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