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Science 8 Online Revision 9: SE 4

Total questions: 70

Worksheet time: 51mins

Name
Class
Date
1.

Using sanitary habits to maintain health and prevent illness

a)

Infection

b)

Disease

c)

Hygiene

d)

Toxin

2.

Anything causing danger or risk to health

a)

Calorie

b)

Vector

c)

Hazard

d)

Hygiene

3.

Caused by invasion of a pathogen, often causing harm to tissues

a)

Infection

b)

Infectious Disease

c)

Hygiene

d)

Epidemic

4.

Illness or sickness caused by genes, infection, toxicity, nutritional imbalance, etc.

a)

Disease

b)

Hygiene

c)

Epidemic

d)

Protozoa

5.

Nonliving pathogen that is capable of infecting and reproducing within living hosts: may spread rapidly throughout populations.

a)

Virus

b)

Vector

c)

Fungi

d)

Disease

6.

A rapidly spreading outbreak of disease affecting widespread regions across the world ( ex: smallpox, TB, certain flu outbreaks)

a)

Epidemic

b)

Pandemic

c)

Protozoa

d)

Bacteria

7.

A rapidly spreading outbreak of disease affecting many large populations( example: typhoid)

a)

Disease

b)

Epidemic

c)

Pandemic

d)

Bacteria

8.

Ticks are an example of this way of transmitting (spreading) disease

a)

Air-borne

b)

Vector

c)

Touching a surface

d)

Contaminated food or water

9.

Infectious diseases are caused by _________ in the body.

a)

pathogens

b)

decomposers

10.

Which of the following is an example of direct contact with an infected person?

a)

sneezing

b)

shaking hands

11.

Some human white blood cells help destroy pathogenic bacteria by

a)

causing mutations in the bacteria

b)

engulfing and digesting the bacteria

c)

producing toxins that compete with bacterial toxins

d)

inserting part of their DNA into the bacterial cells

12.

What is the job of your immune system?

a)

To protect you from disease

b)

To send chemical message called hormones

c)

To control the body with electrical impulses

d)

To break down food

13.

Something that causes disease is called a

a)

Tissue

b)

Pathogen

c)

Vaccine

d)

Illness

14.

A disease that is caused by a pathogen and can be passed to people is

a)

Noninfectious

b)

Not contagious

c)

Infectious

d)

Inherited

15.

Your external defenses include

a)

Skin and Mucus

b)

White Blood Cells

c)

Fever

d)

Inflammation

16.

Which cells identify and destroy germs?

a)

Bacteria

b)

Neurons

c)

Red Blood Cells

d)

White Blood Cells

17.

A substance made from weakened pathogens that triggers an immune response is a

a)

Virus

b)

Vaccine

c)

Antibiotic

d)

Fever

18.

What is the best way to avoid getting sick?

a)

Get a vaccine

b)

Avoid sick people

c)

Cook food properly

d)

Wash your hands

19.

A tiger’s fur is orange-brown with stripes. Its fur helps it hide in a field of brown grass. When another animal comes near, the tiger can jump out of hiding and attack it. A toad’s body is brown. It blends in with brown sand. A toad can hide from predators while it looks for insects to eat.


What is one way that a tiger and a toad are similar?


a)

Their skin is adapted for hunting at night.

b)

Their skin keeps them cool in the sun.

c)

They are both good swimmers.

d)

Their color helps them hide to get food.

20.

Animals that live in the frigid regions of the North or South Pole must adapt to special conditions. Some information about environmental conditions in polar regions is provided.


Which of these could be a helpful adaptation for an organism that lives in the North Pole?

a)

Ability to fly or run fast.

b)

Strong legs to jump high.

c)

Thick fur and layers of fat.

d)

Hard shell around the body.

21.

Cacti can be found in many deserts because they are well adapted to survive there. The chart below list several of the cacti’s adaptation and how they help it to survive.


According to the chart above, which factor of the desert environment has the cactus adapted to survive?

a)

Extreme temperatures

b)

Lack of precipitation

c)

Plant eating insects

d)

Trunk rotting diseases

22.

Adriana loves how water lilies float on water. She has recently planted a few in her backyard pond. Some adaptations of a water lily are illustrated here.


The water lily has unique adaptations that allow it to survive in the water. Which adaptation of the water lily is specially adapted to allow it to reach the surface of the water?

a)

Pale pink flowers

b)

Broad, flat leaves

c)

Long, gas-filled stems

d)

Thick roots

23.

Several bird species that live in an area eat different things. Some eat plant material and others eat animals such as rodents.


If there is a disease that kills all of the rodents living in the area, which bird species would most likely decrease?

a)

Species A because the rodents eat plants

b)

Species B because its main food source is gone

c)

Species C because it eats food other than rodents

d)

Species D because its food source includes snakes and lizards

24.

Adaptations are:

a)

special features that allow a plant or animal to live in a particular place or habitat.

b)

processes of making food in a plant.

c)

types of soil and minerals in the ground.

d)

mutations needed to join the X-men, like Wolverine.

25.

One structural adaptation utilized by many plants is that of sweet fruits and berries. How is this an advantage to survival?

a)

It allows pollen to be attracted to flowers of the same species.

b)

It keeps other plants from growing in their territory.

c)

It attracts animals that can spread the seeds far away.

d)

It eliminates competition with other plant species.

26.

Which of the following would NOT be a behavioral adaptation used by plants to survive and reproduce?

a)

Thorns protect plants from predators.

b)

Plants lean or grow towards the sunlight.

c)

Roots grow down into the soil to reach water.

d)

Vines can grow up trees to reach sunlight.

27.

Survival is a ------ that is a natural instinct.

a)

camouflage

b)

behavior

c)

spray

d)

defense

28.
Use the dichotomous key to identify fish w
a)
trumpet fish
b)
spotted eagle ray
c)
spotted goat fish
d)
glass eye snapper
29.
Use the dichotomous key to identify fish x
a)
trumpet fish
b)
spotted eagle ray
c)
spotted goat fish
d)
glass eye snapper
30.
Use the dichotomous key to identify fish y
a)
trumpet fish
b)
spotted eagle ray
c)
spotted goat fish
d)
glass eye snapper
31.
Use the dichotomous key to identify fish z
a)
trumpet fish
b)
spotted eagle ray
c)
spotted goat fish
d)
glass eye snapper
32.
How can migration enhance the survival of organisms?
a)
Migration causes adaptations to occur more frequently.
b)
Migration helps organisms to avoid predators.
c)
Migration requires organisms to exert a lot of energy.
d)
Migration makes finding necessary resources more likely.
33.
Over time, corn plants are bred to make larger corn cobs and kernels. This is and example of _________.
a)
selective breeding
b)
dichotomous key
c)
natural selection
d)
extinction
34.
Over time, honey suckle flowers developed a sweet smell to attract pollinators. This is and example of _________
a)
selective breeding
b)
dichotomous key
c)
natural selection
d)
extinction
35.
How might pockets of air in a bird's bones allow it to fly?
a)
They keep the bird very light.
b)
They produce helium for lift.
c)
They allow the birds to absorb more oxygen.
d)
They allow wind to flow through their bones.
36.

Which of these is a structural adaptation?

a)

a pointed beak

b)

swarming

c)

the ability to hunt

d)

migrating

37.

Which term is associated only with behavioral adaptations?

a)

trait

b)

instinct

c)

variation

d)

vestigial

38.

Which plant adaptation serves a purpose similar to that of an animal's fur?

a)

bark

b)

scales

c)

flowers

d)

roots

39.
Temperature definition:
a)
Is everything that can produce a change in matter.
b)
Everything conteins a certain amount of thermal energy that we can measure.
c)
Is the transfer of thermal energy from one type of matter with a higher temperature to another type of matter with a lower temperature.
d)
Has got kinetic energy. It originates from something vibrating. Is movement.
40.
What type of Energy has Sound got?
a)
Is everything that can produce a change in matter.
b)
Energy produced by luminous source.
c)
Is the transfer of thermal energy from one type of matter with a higher temperature to another type of matter with a lower temperature.
d)
Has got kinetic energy. It originates from something vibrating. Is movement.
41.
Energy can run out because it can´t be replace as we use it.
a)
Non Renewable.
b)
Renewable.
c)
Energy Sources.
d)
Fossil Fuels.
42.
The Sun, Wind, Flowing Water, Biomass and Heat from the Earth are __________ energy sources.
a)
Non Renewable.
b)
Renewable.
c)
Energy Sources.
d)
Fossil Fuels.
43.
Charateristics of light:
a)
Transparent, Translucent and Opaque.
b)
Natural light source.
c)
Travels in a straight line in all directions and faster than any other type of energy.
d)
Dispersion and Reflection.
44.
Heat definition:
a)
Is everything that can produce a change in matter.
b)
Energy produced by luminous source.
c)
Is the transfer of thermal energy from one type of matter with a higher temperature to another type of matter with a lower temperature.
d)
Has got kinetic energy. It originates from something vibrating. Is movement.
45.
Liquid changed into a solid
a)
Freezing
b)
Condensation
c)
Melting
d)
Evaporation
46.
Liquid changed into a gas
a)
Freezing
b)
Condensation
c)
Melting
d)
Evaporation
47.
Solid changed into a liquid
a)
Freezing
b)
Condensation
c)
Melting
d)
Evaporation
48.
Which two phases changes add energy?
a)
Freezing, Melting
b)
Condensation, Evaporation
c)
Freezing, Condensation
d)
Melting, Evaporation
49.
Which two phases changes takes away energy?
a)
Freezing, Melting
b)
Condensation, Evaporation
c)
Freezing, Condensation
d)
Melting, Evaporation
50.

Plants need what to carry out photosynthesis ?

a)

oxygen, sunlight, and water

b)

carbon dioxide, sunlight and water

c)

oxygen, carbon dioxide and water

d)

carbon dioxide, oxygen and sunlight

51.

The function of the cuticle (waxy layer) on the leaf is to

a)

keep it looking shiny

b)

stop the leaf from turning brown

c)

keep the upper epidermis together

d)

stop the leaf cells from drying out

52.

Leaves are green and roots are white because

a)

leaves contain chlorophyll, but roots don't

b)

roots contain chlorophyll, but leaves don't

c)

leaves absorb green light but roots do not

d)

roots absorb green light, but leaves do not

53.

Which organelle is responsible making food (Glucose) using sunlight?

a)

Ribosomes

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

54.

What is the green pigment that "traps" sunlight?

a)

Chlorophyll

b)

Chloroplasts

c)

Photosynthesis

d)

ATP

55.

The tiny opening on the plant that lets air in and holds water in is called the ___________________.

a)

guard cell

b)

stomata

c)

petal

d)

cuticle

56.
___ is the basic particle from which all elements are made.
a)
Atom
b)
Compounds
c)
Water
d)
Air
57.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
58.

Using one or more of your senses to gather information

a)

predicting

b)

observing

c)

evaluating

d)

inferring

59.

the process of grouping items together that are alike in some way

a)

observing

b)

predicting

c)

evaluating

d)

classifying

60.

forecasting what will happen in the future based on past experience or evidence

a)

predicting

b)

inductive reasoning

c)

deductive reasoning

d)

inferring

61.

Brian is currently studying biology. He loves looking at the world around him and trying to find out why everything works the way it does in nature. He is always observing and inferring. He asks a ton of questions and tries to find the answers. What scientific attitude is Brian exemplifying?

a)

honesty

b)

skepticism

c)

bias

d)

curiosity

62.

An ionic compound forms between a _______ and _______.

a)

metal and non-metal

b)

two metals

c)

two non-metals

63.

Name the ionic compound, LiCl

a)

lithium chlorine

b)

lithium chloride

c)

lithium chlorate

d)

lithium monochloride

64.

Name the ionic compound, CaCO3

a)

calcium carbide

b)

calcium carbon trioxide

c)

calcium carbon oxide

d)

calcium carbonate

65.
H20 - name?
a)
hydrooxic acid
b)
hydroxic acid
c)
water
d)
hydrogen oxide
66.

What is the correct formula of phosphorus trichloride?

a)

P2Cl3

b)

P3Cl3

c)

PCl3

d)

PCl5

67.

What is the correct molecular formula for sodium nitrate?

a)

NaNO2

b)

Na3N

c)

Na3NO

d)

NaNO3

68.
Which of the following formulas represents carbon monoxide?
a)
CO
b)
CO2
c)
NO
d)
SO2
69.
Covalent bonds form between 
a)
nonmetal and metal
b)
metal and metal 
c)
nonmetal and nonmetal
70.

Name this compound:

KI

a)

potassium iodide

b)

potassium iodite

c)

iodine potasside

d)

potassium iodine

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