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Science 6 Reviewer

Total questions: 150

Worksheet time: 8hrs 30mins

Name
Class
Date
1.

Mammals are covered with....

a)

Sand

b)

Hair

c)

Feather

d)

Thorns

2.

What do mammals use to breathe with?

a)

Gills

b)

Skin

c)

Lungs

d)

Blood

3.

Animals that begin their life in the water and live on land are called...

a)

Birds

b)

Amphibians

c)

Mammals

d)

Reptiles

4.

Animals that have a backbone are called...

a)

Non-vertebrates

b)

Vertebrates

c)

Invertebrates

d)

Semi-vertebrates

5.

Comparing or organizing things into groups is called...

a)

Classifying

b)

Cleaning

c)

Coming together

d)

Metamorphosis

6.
There are five categories of vertebrates.  Which one is not a vertebrate?
a)
Mammals
b)
Birds
c)
Arthropods
d)
Reptiles
7.

Invertebrate are animals

a)

Without a backbone

b)

Have a spine

c)

Has a backbone made of cartilage

d)

That look like plants

8.

Sponges

a)

Are plants

b)

Are plankton

c)

Are found in cold waters

d)

Are filter feeders

9.

Which of these animals is not a crustacean?

a)

lobster

b)

crayfish

c)

crabs

d)

clam

10.

A squid is a member of what family that have soft bodies.

a)

Sponges

b)

Crustaceans

c)

Molluscs

d)

Coelenterates

11.

Common characteristics of Echinoderms are

a)

Tubed feet, no shell

b)

spiky skin, have an exoskeloton

c)

symmetrical body usually 5 sided, are plants

d)

tubed feet, symmetrical body usually 5 sided

12.

Jellyfish, sea anemone, coral, are part of what invertebrate group

a)

Molluscs

b)

Coelenterates

c)

Sponges

d)

Stingers

13.

Which group are all the same classification?

a)

lobster, coral, hermit crab

b)

Shrimp, jellyfish , bluebottle

c)

mussel, octopus, scallop

d)

Sea cucumbers, starfish, pipi

14.

What animal would have an exoskeleton?

a)

sponge

b)

crab

c)

bluebottle

d)

shark

15.
Soft bodied invertebrate with a thick muscular foot for movement: some have shells
a)
molluks
b)
arthropod
c)
segmented worm
d)
sponge
16.
What group has a long tube-like body with many sections and breathes through its skin?
a)
Segmented Worms
b)
Arthropods
c)
Echinoderms
d)
Sponges 
17.
What am I?
a)
Mollusk
b)
Annelid
c)
Arthropod
d)
Cnidarian
18.
What am I?
a)
Arthropod
b)
Cnidarian
c)
Mollusk
d)
Porifera
19.

What do all arthropods have?

a)

6 legs

b)

8 legs

c)

stiff legs

d)

jointed legs

20.

What is the exoskeleton composed of?

a)

Calcium

b)

Chitin

c)

Lead

d)

Magnesium

21.
Which structure inside the ovary contains egg cells?
a)
Ovules
b)
stigma
c)
peduncle
22.
Flowering: gymnosperms
Non-flowering : angiosperms
a)
TRUE
b)
FALSE
23.
Pine, gingko, cypress and spruce are examples of ________? 
a)
angiosperm
b)
gymnosperm
c)
ppteridophytes
24.
______ contain the sperm and egg cells of a plant which is protected by a tough coat inside a spore capsule.
a)
Conifers
b)
Sponges
c)
Spores
25.
These type of plant grow in moist and swampy environment and on top of old woods and rocks. Mostly they lack true roots and use tiny hairlike stems for absorption of water and nutrients from the soil. 
a)
Bryophytes
b)
Conifers
c)
Spores
26.
Conifers reproduce using cones. 
a)
TRUE
b)
FALSE
27.
The following are examples of spore-bearing plants except: 
a)
Fern
b)
Mosses
c)
Gingko
28.
It is a kind of artificial vegetative propagation in which it is done by cutting a branch of a plant of good variety and attaching it to a plant rooted in the soil. The rooted plant is the stock and the attached branch is the scion.
a)
Grafting 
b)
Marcotting
c)
Layering
29.

Plants are classified into which two major groups?

a)

Vertebrate and Invertebrate

b)

Vascular and Nonvascular

c)

Autotroph and Heterotroph

d)

Carnivore and Herbivore

30.

Which four of the following are characteristics of non-vascular plants:

a)

Reproduce with spores

b)

DO NOT have a well-developed system for transporting water and food

c)

Largest group in the Plant Kingdom

d)

They do not have true roots, stems, or leaves

e)

Typically smaller in size

31.

Conifers are called conifers because they produce _______________ ?

a)

flowers

b)

cones

c)

spores

d)

fruit

32.

Angiosperms (flowering plants) are so successful because the produce a flower and ____________.

a)

spores

b)

fruits

c)

non-vascular tissue

d)

cones

33.
attaching a cutting of one plant to another plant
a)
cutting
b)
grafting
c)
painting
d)
planting
34.
an underground stem is....
a)
grafting
b)
cutting
c)
tuber
d)
flower
35.
an underground stem that has fleshy, colorless leaves
a)
tuber
b)
bulb
c)
root
d)
gourd
36.
A form of asexual reproduction which may include runners, tubers and bulbs is:
a)
Vegetative Propogation
b)
Binary Fission
c)
Budding
d)
Sporulation
37.
part of a plant is removed to grow another plant
a)
cutting
b)
planting
c)
tuber
d)
eating
38.
What is the form of natural vegetative propagation that occurs when a plant droops and the drooping stems form roots and new plants?
a)
rhizomes
b)
cutting
c)
runners
d)
Layering
39.

__________: the sprouting of a seedling from a seed.

a)

growth

b)

sproutness

c)

germination

d)

viability

40.

a)

leaf cutting

b)

leaf bud cutting

c)

air layering

d)

stem cutting

41.

a)

leaf cutting

b)

leaf bud cutting

c)

root cutting

d)

stem cutting

42.

a)

leaf cutting

b)

grafting

c)

root cutting

d)

stem transplant

43.

Where are most of the tropical rain forests located?

a)

Tropic of cancer

b)

equator

c)

Tropic of Capricorn

d)

Arctic circle

e)

Antarctic circle

44.

Which of the following best describes the tropical rain forest?

a)

warm

b)

hot and humid

c)

hot and dry

d)

cold and dry

45.

How many layers are there in the rainforest?

a)

3

b)

4

c)

5

d)

6

46.

What are the tallest trees called?

a)

Emergent

b)

Emergant

c)

Immense

d)

Giant

47.

Which layer of the rainforest is the hottest and driest?

a)

Emergent

b)

Canopy

c)

Under Canopy

d)

Shrub layer

48.

Young trees and palms are found in which layer?

a)

Emergent

b)

Canopy

c)

Under canopy

d)

Shrub

49.

Waxy leaves protect from?

a)

Rain

b)

Animals

c)

Sun

d)

Snow

50.

Corals are types of

a)

plants

b)

rocks

c)

animals

d)

algae

51.

How do coral reefs help protect coasts from erosion?

a)

They provide shelter for animals

b)

They keep soil from moving

c)

They are home to thousands of living things

d)

They stop storms from forming

52.

How is a barrier reef different from a fringe reef?

a)

A barrier reef is home to many different types of sea life.

b)

A barrier reef is shaped like a circle and forms outside of a sinking island.

c)

A barrier reef follows the natural shoreline of the land.

d)

A barrier reef has a large, deep area of water between it and the shore.

53.

Which of the following is an example of coral reefs being fragile?

a)

an eel hiding in a hole of a coral reef

b)

a golden butterflyfish living near a coral reef

c)

a boat breaking off a piece of a coral reef

d)

a lobster feeding near a coral reef

54.

What are 3 common names of Mangrove?

a)

Black Mangroves

b)

Violet Mangroves

c)

Red Mangroves

d)

White Mangroves

e)

Yellow Mangroves

55.

How can Mangroves stand still in the waves?

a)

By their roots

b)

By their stem

c)

By their leaves

56.

Mangrove forests are home for...

a)

crab

b)

shrimp

c)

shells

d)

fishes

e)

mollusk species

57.

Salinity means the level of _______________in the water.

a)

oxygen

b)

salt

c)

nitrogen

d)

salcite

58.

Which of the following is not an adaptation of mangroves

a)

Aerial roots

b)

Buttress roots

c)

Open stomata

d)

salt glands

59.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
60.
The rougher the surface, the faster an object will travel over the surface.
a)
True
b)
False
61.
When most objects with smooth surfaces rub, there is less friction.
a)
True
b)
False
62.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
63.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
64.

Which of the following answers is the most scientific answer for the question:


What is friction?

a)

The random force between two solids, liquids, or gases.

b)

The contact force between two solids, liquids, or gases that slide past one another.

c)

The thing that creates static electricity

d)

A force that is random

65.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
66.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
67.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
68.

What two things determine the gravity of an object?

a)

mass & weight

b)

mass & distance

c)

density & mass

d)

volume & distance

69.

When will the forces of gravity between two objects be the GREATEST?

a)

when the masses of both objects are small and the objects are far apart

b)

when the masses of both objects are large and the objects are close together

c)

when the masses of both objects are small and the objects are close together

d)

when the masses of both objects are large and the objects are far apart

70.

When will the gravity between two objects be the LEAST?

a)

when the masses of both objects is small and the objects are close together

b)

when the masses of both objects is small and the objects are far apart

c)

when the masses of both objects is large and the objects are close together

d)

when the masses of both objects is large and the objects are far apart

71.

Which statement about gravity is true?

a)

gravity causes objects to pull towards one another

b)

gravity causes objects to push away from each other

c)

gravity only takes place between planets

d)

the moon doesn't have any gravity

72.
The law of universal gravitation is credited to whom? 
a)
Einstein 
b)
Galileo
c)
Darwin
d)
Newton 
73.

More mass equals:

a)

less gravity

b)

less distance

c)

more gravity

d)

more distance

74.

When will the forces of gravity between two objects be the GREATEST?

a)

when the masses of both objects are small and the objects are far apart

b)

when the masses of both objects are large and the objects are close together

c)

when the masses of both objects are small and the objects are close together

d)

when the masses of both objects are large and the objects are far apart

75.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
76.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
77.
Which is the best example that something has kinetic energy?
a)
a. a car parked on a steep hill 
b)
b. a tennis ball rolling across the court
c)
c. a picture hanging on the wall 
d)
d. a piece of coal before it's burned 
78.

Which point has the most potential energy?

a)

G

b)

F

c)

B

d)

A

79.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
80.

Energy cannot be created or destroyed.

a)

True

b)

False

81.

Energy cannot be transformed from one form

to another.

a)

True

b)

False

82.

Which object shows an energy transformation from electrical to heat energy?

a)
b)
c)
d)
83.

Which activity involved the energy transformation from chemical to potential energy?

a)
b)
c)
d)
84.

What energy transformations take place when a battery-operated radio is in use?

a)

Electrical to chemical to light

b)

Sound to chemical to mechanical

c)

Chemical to electrical to sound

d)

Light to electrical to thermal

85.

Which transformation of energy will occured when you turn on a hair dryer?

a)

electric to kinetic to thermal and sound

b)

chemical to thermal to light and sound

c)

nuclear to electrical to thermal and sound

d)

kinetic to light to thermal and sound

86.

State the correct energy transformation when you turn on a television?

a)

Electrical energy ----> light energy

b)

Electrical energy -----> light energy ----->sound energy

c)

Chemical energy ---->light energy-----> sound energy

d)

Light energy ----> chemical energy -----> sound energy

87.
Which is not a type of simple machines?
a)
spring
b)
screw
c)
pulley
d)
wedge
88.
Work is
a)
energy from the sun
b)
a force that moves an object
c)
a type of machine
d)
a force that pulls you towards the Earth
89.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
90.
What type of simple machine is found on the floor of a bathtub?
a)
screw
b)
inclined plane
c)
wedge
d)
pulley
91.
Which of these is an example of a wedge?
a)
skateboard
b)
broom
c)
stairs
d)
butter knife
92.
A screw is made up of _____ wrapped around a post or rod.
a)
threads
b)
springs
c)
treads
d)
strings
93.
Which of these is not an example of an inclined plane?
a)
ladder
b)
stairs
c)
wall
d)
driveway
94.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
95.
Jan is using a screwdriver, which is a type of ...
a)
a pulley
b)
a screw
c)
a lever
d)
a wheel and axle
96.
Which is a characteristic of a simple machine?
a)
They run on electricity.
b)
They take a long time to make.
c)
They have few or no moving parts.
d)
They are not very large.
97.
Which type of simple machine would be found on the bottom of a wagon??
a)
a pulley
b)
a screw
c)
a wedge
d)
a wheel and axle
98.
Which choice is an example of an inclined plane?
a)
A ramp
b)
Seesaw
c)
Bottle Cap
d)
Ferris Wheel 
99.
The fixed point on the lever is called 
a)
load
b)
resistance
c)
bar
d)
fulcrum
100.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
101.

Mammals, fish, birds, reptiles and amphibians are all ___.

a)

invertebrate

b)

vertebrate

102.

Which group does it belong to?

a)

invertebrate

b)

vertebrate

103.

Which of the following is an invertebrate?

a)

Cat

b)

Snail

c)

Goldfish

d)

Humans

104.

What does invertebrate mean?

a)

Animals without a backbone

b)

Animals that change their form

c)

Animals with a backbone

d)

Animals that lay eggs

105.

A butterfly is a type of vertebrate.

a)

True

b)

False

106.
Dragonflies, stink bugs, and lady bugs are __________.
a)
insects
b)
arthropods
c)
animals
d)
all of these
107.
I have a soft-body, a hard shell, and live on land and water.  What am I?
a)
Mollusk
b)
Arthropod
c)
Echinoderm
d)
Cnidarian
108.
Between 90-95% of all animals on earth can be classified as _____.
a)
invertebrates
b)
vertebrates
c)
reptiles
d)
mammals
109.
Why are sponges classified as animals
a)
they digest food
b)
they breathe through gills
c)
they use legs to move
d)
they have skeleton
110.
Which statement applies to ALL invertebrates?
a)
They are made of only one cell.
b)
They have no backbone.
c)
They reproduce asexually.
111.
Which three parts of the body has an insect?
a)
Tencacles, head, legs
b)
head, abdomen, legs
c)
Head, thorax, abdomen 
d)
Hair, bones, foot 
112.

Which of the following is NOT a characterstic of an organism in the plant kingdom?

a)

has a cell wall and chlorophyll

b)

are autotrophs

c)

are heterotrophs

d)

don’t physically move from one place to another

113.

What does is mean to be an autotroph?

a)

You make your own food

b)

You have to find your food

114.

Which of the following are involved in asexual reproduction?

a)

fertilization

b)

meiosis

c)

sperm

d)

zygote

e)

none of these are involved in sexual reproduction

115.

Root, stem and leaves are called-

a)

Sexual parts

b)

Vegetative parts

116.

The roots of this plant can give rise to a new baby plant.

a)

Bryophyllum

b)

Sweet potato

c)

Sugarcane

117.

The stem of this plant can become a new plant.

a)

Potato

b)

Sugarcane

c)

Ginger

d)

All of theses

118.

What photos are the Mangroves tree?

a)
b)
c)
d)
119.
The tropical rainforest is the liveliest ______ on earth.
a)
ecosystem
b)
biosphere
c)
exosystem
d)
mountain range
120.
Trees in the tropical rainforest have leaves so densely packed that _______ can hardly penetrate through the leaves, making the ground very shady.
a)
jaguars
b)
birds
c)
sunlight
d)
rain
121.
What is the weather like in the tropical rainforest?
a)
hot in the summer and cold in the winter
b)
hot during the day but freezing cold at night
c)
hot and humid all year round
d)
four distinct seasons (hot=summer, cold=winter, cool=fall, warm=spring)
122.
Where can we find tropical rainforests?
a)
near the equator
b)
near the north pole
c)
near Cape Horn
d)
in the midwest United States
123.
What is the world's largest tropical rainforest?
a)
Daintree in Australia
b)
 El Yunque in Puerto Rico
c)
Kakum in Ghana, Africa
d)
Amazon in South America
124.

Friction _____________ motion

a)

Works in the same direction as

b)

Opposes

c)

Has not effect on

d)

Pulls against

125.

True or False: objects that are smooth have LESS friction than objects that are rough

a)

TRUE

b)

FALSE

126.

Which type of friction keeps objects from sliding around all over the place

a)

Static Friction

b)

Rolling Friction

c)

Fluid Friction

d)

Sliding Friction

127.

Imagine you decide to jump out of an airplane 🛩

Which force is going to pull you down towards earth

a)

Fluid Friction

b)

Static Friction

c)

Gravity

d)

The wind from the airplane

128.

When you jump out of a plane to go skydiving 🪂 you thankfully have a parachute so you can safely land 🛫. Which answer choice explains why the parachute helps you land safely

a)

While gravity pulls you down very quickly, Air Resistance (fluid friction) pushes back against gravity and your parachute, slowing you down

b)

While gravity pushes you down very slowly, Air Resistance (fluid friction) pulls back against gravity and your parachute, which means you can land safely

c)

When you have a parachute gravity is not able to pull you down as fast as it normally can

d)

The parachute will get caught on something on your way down which will save your life

129.

If you are unable to make it to the bottom of the slide, who won the tug of war between sliding friction and gravity?

a)

There is no winner, and your sad because you're stuck on a slide

b)

Gravity won

c)

Neither, its a tie

d)

Sliding friction won

130.

Which of these materials do you predict would have the MOST amount of friction

a)

Metal

b)

Tile

c)

Sand Paper

d)

Denim

131.
A measure of the amount of matter in an object
a)
mass
b)
weight
c)
gravity
d)
pounds
132.
A force of attraction between 2 object that is directly related to mass and indirectly related to distance.
a)
mass
b)
weight
c)
gravity
d)
kilogram
133.
Without gravity we would________. 
a)
Float away
b)
Stay in the ground
c)
Nothing would happen.
d)
I don't know
134.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
135.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
136.

What is energy?

a)

The ability to do work

b)

A force

c)

Electricity

d)

The ability to transform work

137.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
138.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
139.
On a roller coaster, where is maximum kinetic energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
140.
Potential Energy is:
a)
The energy of motion
b)
always conserved
c)
The energy due to position
141.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
142.

What type of simple machine has a ramp that makes it easier for a heavy object to be moved up or down?

a)

lever

b)

pulley

c)

inclined plane

d)

wedge

143.

This picture shows an example of what type simple machine?

a)

pulley

b)

wedge

c)

lever

d)

wheel and axle

144.

A seesaw is an example of what type of simple machine?

a)

wheel and axle

b)

lever

c)

wedge

d)

pulley

145.

This is an example of what type of simple machine?

a)

inclined plane

b)

wedge

c)

screw

d)

lever

146.

Which one is NOT a simple machine?

a)

pulley

b)

stick

c)

lever

d)

screw

147.

What type of simple machine makes chopping wood easier?

a)

inclined plane

b)

screw

c)

wedge

d)

lever

148.
What type of simple machine is shown here?
a)
Pulley
b)
Wheel and Axle
c)
Lever
d)
Wedge
149.
A door stop is an example of a
a)
Screw
b)
Wedge
c)
Lever
d)
Inclined Plane
150.

What kind of work is made easier by the wheels of this object?

a)

pushing a heavy load

b)

lifting a heavy load

c)

dividing a heavy load

d)

holding a small load

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