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Science review

Total questions: 80

Worksheet time: 1hrs 20mins

Name
Class
Date
1.
Which class of animals have scales and lay eggs?
a)
Birds 
b)
Amphibians
c)
Reptiles
d)
Mammals
2.

We are ectothermic. We live in the water and breathe with gills. Our parents live on land and breathe with lungs. Who are we?

a)

Amphibians

b)

Reptiles

c)

Mammals

d)

Birds

3.
Which animal is an ectotherm?
a)
Penguin
b)
Deer
c)
Whale
d)
Snake
4.
Birds eat every day, twice a day.   A lizard will eat only one meal every few weeks.  Why?
a)
Birds need more food to have energy to maintain their body heat. 
b)
Lizards are small and get full quicker than a bird.   
c)
Birds have larger stomachs and can hold more food. 
d)
Lizards are picky eaters.  
5.

Which animals are endothermic?

a)

whales and eagles

b)

sharks and alligators

c)

hawks and frogs

d)

goldfish and salamanders

6.
Which of the following is a characteristic of an amphibian?
a)
They give live births and feed their young with milk.
b)
They live on land and have fur.  
c)
They have feathers and breathe with lungs. 
d)
They have two stages to their life cycle. 
7.
Which of the following animals are mammals?
a)
Salamander and frog
b)
Whale and dolphin
c)
snake and lizard
d)
eagle and penguin
8.
Which class of vertebrate is a turtle?
a)
Fish
b)
Amphibian
c)
reptile
d)
Mammal
9.
What are the five classes of vertebrates?
a)
fish, amphibians, reptiles, birds, mammals
b)
Sponges, Arthropoda, mammals, birds, fish
c)
Fish, amphibians, rocks, birds, mollusks
d)
Flowers, trees, grass, monocots, dicots
10.

What do each of these animals have in common?

a)

They are vertebrates.

b)

They are invertebrates.

c)

They belong to the plant kingdom.

d)

They are autotrophs.

11.
There are five categories of vertebrates.  Which one is not a vertebrate?
a)
Mammals
b)
Birds
c)
Arthropods
d)
Reptiles
12.
What are vertebrates?
a)
Animals with a backbone
b)
Animals without a backbone
13.
My body is covered with hair or fur, I have live babies, and I maintain a constant body temperature. What am I?
a)
Bird
b)
Reptile
c)
Mammal
d)
Echinoderm
14.
I live part of my life in water, leave, then return to the water. What am I?
a)
Mammal
b)
Arthropod
c)
Reptile
d)
Amphibian
15.
Which of these is a reptile?
a)
Eagle
b)
Shark
c)
Chimpanzee
d)
Iguana
16.
What covers a reptile and a fish's body?
a)
Scales
b)
Fur/hair
c)
Feathers
d)
Spines
17.
Which of these vertebrates doesn't have lungs?
a)
birds
b)
reptiles
c)
fish
d)
mammals
18.
Frogs, toads, and salamanders are part of which animal group?
a)
reptiles
b)
amphibians
c)
birds
d)
fish
19.
This lion is a mammal because...
a)
It has a backbone.
b)
It has fur/hair
c)
It is ectothermic.
d)
It lays eggs.
20.
Which group of vertebrates lay jelly like eggs?
a)
amphibian
b)
reptile
c)
bird
d)
mammal
21.
Which group has a protective skin covering?
a)
birds/fish
b)
reptiles
c)
mammals/amphibians
d)
all
22.
A bat, cat, and rat are in which vertebrate group?
a)
amphibian
b)
reptile
c)
bird 
d)
mammal
23.
A zebra, bat, and ground hog are animals from different parts of the world. What characteristics do all of these animals have that allow them to be in the same group.
a)
fur
b)
claws
c)
big ears
d)
webbed feet
24.
Which is a characteristic of all vertebrates?
a)
digestive system with one opening
b)
offspring hatch from eggs
c)
respiratory system with lungs
d)
spinal chord enclosed in bones
25.
Which class of vertebrates feeds milk to its young?
a)
amphibians
b)
fish
c)
mammals
d)
reptiles
26.
Which kind of animal is born in water but lives on land as an adult?
a)
reptile
b)
mammal
c)
amphibian
d)
fish
27.
Which animal have lightweight, hollow bones?
a)
reptile
b)
birds
c)
fish
d)
amphibian
28.

The picture shows a(n) ________________ circuit.

a)
b)
29.

The picture shows a(n) ________________ circuit.

a)
b)
30.

The picture shows a(n) ________________ circuit.

a)
b)
31.

The picture shows a(n) ________________ circuit.

a)
b)
32.

The picture shows a(n) ________________ circuit.

a)
b)
33.

The picture shows a(n) ________________ circuit.

a)
b)
34.

The picture shows a(n) ________________ circuit.

a)
b)
35.

The picture shows a(n) ________________ circuit.

a)
b)
36.

The picture shows a(n) ________________ circuit.

a)
b)
37.

The picture shows a(n) ________________ circuit.

a)
b)
38.
wood is a _____?
a)
conductor
b)
insulator
39.
wood is a _____?
a)
conductor
b)
insulator
40.
water is a______?
a)
conductor
b)
insulator
41.

This circuit has more than one path. When one light goes out, the others stay on.

a)

closed circuit

b)

series circuit

c)

parallel circuit

d)

open circuit

42.
What kind of circuit is this?
a)
series
b)
parallel
43.
What type of circuit is show in the image?
a)
Series Circuit
b)
Parallel Circuit
44.
When all parts of the circuit are connected it is a ______ circuit. 
a)
open
b)
closed
45.
When you flip a light switch on and off you are closing and opening a circuit.
a)
true
b)
false
46.
What is a Parallel circuit? 
a)
Has only one path 
b)
Has more than one path 
c)
Allows energy to travel through easily 
d)
Has only one light bulb
47.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
48.
Which best describes a simple series circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from the switch.
c)
Electricity flows along many pathways.
d)
The flow of electricity comes from the light bulb.
49.

Why is electrical wiring usually are covered with a layer of plastic?

a)

To make it look pretty

b)

To help electricity flow along the wire

c)

To make it safe

d)

To add more energy

50.

Why is electrical wiring usually made from copper?

a)

Because copper is shiny

b)

Because copper conducts electricity

c)

Because copper is not magnetic

d)

Because copper insulate electricity

51.

What is a circuit that only has ONE path for electricity to flow?

a)

series circuit

b)

closed circuit

c)

parallel circuit

d)

light bulb

52.

What is a circuit with several paths for electricity to flow?

a)

conductor

b)

series circuit

c)

parallel circuit

d)

open circuit

53.
An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —
a)
Point D to Point C
b)
Point B to Point C
c)
Point A to Point D
d)
Point B to Point D
54.
The electrician in this picture is wearing rubber gloves for protection.  The purpose of the rubber gloves is to --
a)
keep the electrician dry
b)
create an electrical circuit
c)
produce electricity
d)
protect the electrician
55.
What material would be safest to use as an insulator to cover electrical wires?
a)
rubber
b)
tin
c)
aluminum
d)
water
56.
What is an electrical circuit?
a)
lets you turn the energy on and off
b)
a closed path where where electricity flows
c)
stop electricity from flowing through
57.
What is a battery?
a)
switch
b)
power source
c)
insulator
58.
A complete circuit has .......
a)
a motor in it
b)
a switch in it
c)
two bulbs in it
d)
no breaks in it
59.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
60.
If you replace the paper clip with a plastic spoon, what happens?
a)
The bulb doesn't light
b)
The bulb is dimmer
c)
The wires get hot
d)
There is no change
61.
Which of these objects is an insulator?
a)
Copper Wire
b)
Paper Clip
c)
Steel Pole
d)
Rubber Gloves
62.
Shredding a piece of paper
a)
Chemical Change
b)
Physical Change
63.
Rust on an iron fence
a)
Chemical Change
b)
Physical Change
64.
Boiling water
a)
Chemical Change
b)
Physical Change
65.
Ice melting
a)
Chemical Change
b)
Physical Change
66.
Wood burned in a fireplace
a)
Chemical Change
b)
Physical Change
67.
Cake batter baked in an oven
a)
Chemical Change
b)
Physical Change
68.
Baking soda and vinegar combine to make carbon dioxide
a)
Chemical Change
b)
Physical Change
69.
Glass bottle that is shattered
a)
Chemical Change
b)
Physical Change
70.
Copper roof changing color
a)
Chemical Change
b)
Physical Change
71.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
72.
What happens in ALL chemical changes?
a)
Change in state of matter
b)
A new substance is formed
c)
Bubbles are produced
d)
An explosion
73.

What happens in a chemical change?

a)

The atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed.

b)

When objects or substances undergo a change that does not change into a different substance.

74.

What happens in a physical change?

a)

The atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed.

b)

When objects or substances undergo a change that does not change into a different substance.

75.

Which type of change can be undone?

a)

Chemical

b)

Physical

76.

What happens to the weight of matter when it undergoes chemical changes?

a)

It stays the same

b)

It increases

c)

It decreases

77.

What happens to the weight of matter when it undergoes a physcial change?

a)

It stays the same

b)

It increases

c)

It decreases

78.

You tear home your homework into little pieces. How much does the homework weigh after you tear it up?

a)

A little less

b)

A little more

c)

The same

d)

None of the above

79.

If you mix 1 gram of salt with 50 grams of water, how many grams of matter will you have after the salt is completely dissolved?

a)

49 grams

b)

50 grams

c)

51 grams

d)

None of the above

80.

Which are clues that a chemical change has taken place?

a)

Change in temperature

b)

The color changes

c)

The odor or smell changes

d)

Formation of a precipatate

e)

You see bubbles form

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