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year 7 term 3 midterm revision

Total questions: 120

Worksheet time: 10hrs 0mins

Name
Class
Date
1.
5th planet from the sun 
a)
Jupiter 
b)
Saturn 
c)
Uranus 
d)
Neptune 
2.

Inner Planets- select all that apply

a)

dense core

b)

rocky

c)

few moons

d)

thin atmosphere

e)

smaller than outer planets

3.
8th  planet from the sun 
a)
Jupiter 
b)
Saturn 
c)
Uranus 
d)
Neptune 
4.

Outer Planets- select all that apply

a)

small inner cores

b)

larger

c)

gaseous

d)

many moons

e)

temperatures are colder than inner planets

5.
The solar system consists of the sun, smaller objects, and ...
a)
8 planets and their moons
b)
6 planets 
c)
only moons
d)
more than 100 stars
6.
Uranus is different that other planets because it rotates on it's side. 
a)
True
b)
False
7.
The surface of this planet appears red due to rusting iron in the rocks.
a)
Mercury
b)
Mars
c)
Pluto
d)
Venus
8.
This is the largest planet in the solar system.
a)
Saturn
b)
Jupiter
c)
Uranus
d)
Venus
9.
Only planet known to have life
a)
Earth
b)
Mars
c)
Venus
d)
Mercury
10.

Which of the following statements is correct?

a)

Pluto was once classified as a dwarf planet, but is now classified as a main planet

b)

Pluto was never classified as a planet

c)

Pluto has always been considered a planet

d)

Pluto was once considered a planet, but no longer is

11.

What is at the center of our solar system?

a)

asteroid belt

b)

Earth

c)

sun

d)

moon

12.

Which planets are the gas giants?

a)

Earth, Jupiter, Venus, Neptune

b)

Saturn, Uranus, Jupiter, Neptune

c)

Jupiter, Saturn, Uranus, Mars

d)

Uranus, Jupiter, Earth, Neptune

13.

Why is Venus so hot?

a)

It's closest to the sun

b)

It was just made like that

c)

It has the thickest atmosphere

d)

It is pure fire

14.
Pluto is not a planet. It is actually a 
a)
meteorite
b)
dwarf planet
c)
asteroid
d)
comet
15.
 How long does it take the earth to rotate once? 
a)
12 hours
b)
24 hours
c)
20 hours
d)
36 hours
16.
The spinning movement of the Earth about its axis is called the Earth's _____
a)
revolution
b)
rotation
c)
precession
d)
orbit
17.
The movement of the Earth around the Sun is called its _____
a)
revolution
b)
rotation
c)
precession
d)
gyration
18.

Which planet has the longest year?

(a)  

19.

Which planet has the smallest orbit?

(a)  

20.
The relationship between ALL the organisms in a community showing who eats whom is called a ___________________________.
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
d)
Biotic Factors
21.
One path that energy could take through an ecosystem is called a ________________________.
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
d)
Biotic Factors
22.
Where does the energy that travels through an ecosystem originally come from?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
23.
An organism that lives by breaking down dead organic matter into simpler parts is a _______________________.
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
24.
A second-level (secondary) consumer CANNOT be which type of consumer?
a)
Carnivore.
b)
Decomposer.
c)
Omnivore
d)
Herbivore.
25.
An animal that only eats other animals is a _______________.
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
26.
A living thing that makes its own food is called a __________________________.
a)
consumer
b)
producer
c)
carnivore
d)
herbivore
27.
Recently, a family of bobcats moved into an area with a large rabbit population. What changes may occur in the ecosystem?
a)
The rabbit population may increase
b)
The rabbit population may decrease
c)
The rabbit population may increase first, then decrease
d)
The rabbit population will remain the same
28.
A population of mice lives in a barn community. A cat population has just joined the community. What will happen?
a)
Mouse and cat populations both go up?
b)
Mouse and cat populations both go down
c)
Mouse population goes down as cat population goes up
d)
Mouse population goes up as cat population goes down
29.
An animal that eats only plants is a ______________________.
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
30.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
31.
Which best describes what a food chain shows you?
a)
Energy flowing through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers eating other organisms
32.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
33.
Identify the correct food chain that demonstrates the energy flow of this food web
a)
Plant > Caterpillar > Bluebird > Eagle
b)
Plant > Lizard > Snail
c)
Plant >Lizard > Snail >Eagle
d)
Eagle >Lizard>Caterpillar>Plant
34.

Which of the following organisms is a producer?

a)

grass

b)

rabbit

c)

fox

d)

snake

35.

Which of the following organisms is a primary consumer?

a)

grass

b)

rabbit

c)

fox

d)

snake

36.

Which of the following organisms uses photosynthesis to get the energy it needs to survive?

a)

grass

b)

rabbit

c)

fox

d)

snake

37.
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.
38.
What are "trophic levels"?
a)
Levels in a food web/food chain
b)
Levels of land in a mountain
c)
Animal diets
39.
Which of the following is a "primary energy source"?
a)
Grass
b)
Sun
c)
Bacteria
d)
Soil
40.
What might happen if there were no apex predators in this ecosystem?
a)
zebra population would grow fast
b)
other animals wouldn't have enough grass to eat
c)
the food web would be out balance
d)
all of the above
41.

What two things are the product (end result) of photosynthesis?

a)

Oxygen

b)

Glucose

c)

Chloroplasts

d)

Carbon Dioxide

42.

TRUE or FALSE: Animals can make their own food inside themselves.

a)

True

b)

False

43.

Many ecosystems can be sustained by chemosynthesis that starts at undewater thermal vents and isolated cave water.

a)

True

b)

False

44.

One living thing that uses bacteria fueled by the energy of chemosynthesis includes:

a)

giant tube worms

b)

snails

c)

sea slugs

d)

eels

45.
Amplitude is used to measure what?
a)
Pitch
b)
Volume
c)
Sound
d)
Echoes
46.
A rapid back and forth movement?
a)
Echo
b)
Vibrate
c)
Pitch
d)
Amplitude
47.
A sound with a low frequency and low amplitude would be....
a)
Loud with a high pitch
b)
Loud with a low pitch
c)
Quiet with a high pitch
d)
Quiet with a low pitch
48.
We measure pitch in....
a)
Volume
b)
Decibles
c)
Amplitude
d)
Frequency
49.
How LOUD or quiet a sound is...
a)
Pitch
b)
Fequency
c)
Volume
d)
Echo
50.
Energy that you can hear? 
a)
Sound
b)
Light 
c)
Heat 
d)
pitch
51.
When a sound bounces back at you off of a surface
a)
Volume
b)
Pitch
c)
Frequency
d)
Echo
52.
Sound moves in a _________.
a)
Transverse wave
b)
Longitudinal wave
53.
How is sound produced?
a)
By the vibration of particles
b)
By the transfer of particles 
54.
Area of a longitudinal wave where particles are CLOSE together.
a)
Compression
b)
Rarefaction
55.
Area of a longitudinal wave where particles are APART. 
a)
Compression
b)
Rarefaction
56.
Soft surfaces _______ sound waves. 
a)
Reflect
b)
Absorb
57.
Sound travels FASTEST through which of these materials?
a)
Air
b)
Empty space
c)
Metal
d)
Water
58.
A longer string makes a _______ pitch than a short string.
a)
louder
b)
softer
c)
higher
d)
lower
59.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
60.

A place where no sound exists is...

a)

in the air

b)

under water

c)

space

d)

all of the above

61.
Sound waves travel the SLOWEST through _____________.
a)
gases
b)
solids
c)
liquids
62.
Sound does not travel in space because
a)
Space is too far away.
b)
There is no matter in space.
c)
Space is the final frontier
d)
Space has planets.
63.
Why do we see lightning before we hear the thunder?
a)
Our eyes trick us
b)
Light travels faster than sound
c)
they're two separate things
64.

Sarah and Maria made a telephone using two cans and a string. It was a very long string. Maria went upstairs in her house and Sarah stayed downstairs. Maria spoke softly into the can. "I can hear you!' Sarah said back. How can this happen?

a)

Sound waves travel through a vacuum.

b)

Sound waves travel from high to low.

c)

Sound waves travel through solids like the string.

d)

Maria talked so loudly that Sarah could hear her without the phone.

65.
What is frequency?
a)
the number of vibrations per second
b)
how high or low a sound is
c)
the loudness or softness of a sound
d)
the back and forth movement of matter
66.

Sound waves

a)

don't travel

b)

travel in all directions

c)

travel in only one direction

d)

travel only north

67.

What property of this wave is represented by the letter "A"

a)

amplitude

b)

crest

c)

trough

d)

wavelength

68.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
69.
The highest point on a wave is:
a)
the crest
b)
the trough
c)
the top
d)
the coast 
70.
The lowest point on a wave is the:
a)
Amplitude
b)
Crest
c)
Trough
d)
Wavelength
71.
The number of wavelengths that pass a point each per second is:
a)
frequency
b)
period
c)
longitudinal 
d)
transverse wave 
72.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
73.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
74.
A particle that carries a negative electric charge is called a(n) ______.
a)
neutron
b)
atom
c)
proton
d)
electron
75.
The potential difference that causes charges to move in a circuit is ___.
a)
voltage
b)
resistance
c)
current
d)
electric discharge
76.
An example of a voltage source is a _____.
a)
voltmeter
b)
battery
c)
resistance
d)
switch
77.
Conduction is the process of charging an object without touching it.
a)
true
b)
false
78.
Electrical resistance is low in a good conductor.
a)
true
b)
false
79.

A buzzer produces sound.

a)

TRUE

b)

FALSE

80.

Electric appliances have circuits.

a)

TRUE

b)

FALSE

81.

Rubber doesn't allow electricity to pass through.

a)

TRUE

b)

FALSE

82.

Removing the plug of an appliance with wet hands.

a)

SAFE practice

b)

DANGEROUS practice

83.

Using an appliance with exposed electric wires.

a)

SAFE practice

b)

DANGEROUS practice

84.

Putting liquids like water and juice away from an electric appliance.

a)

SAFE practice

b)

DANGEROUS practice

85.

Sticking your finger to an electric outlet.

a)

SAFE practice

b)

DANGEROUS practice

86.

Which material is a conductor?

a)

glass

b)

wood

c)

steel

87.

Which material is an insulator?

a)

plastic

b)

gold

c)

copper

88.

A/an ________________ circuit has no breaks and the bulb will light up.

a)

open

b)

closed

89.

10. A/an _____________ circuit has a break and the bulb will not light up.

a)

open

b)

closed

90.

Will the light bulb light up if the switch remains open as shown?

a)

No, because the electric circuit is not complete.

b)

Yes, because the circuit will be complete.

c)

No, because the battery will push the electric current.

d)

Yes, because the circuit will be complete.

91.

Jill finds that all of the electric cords in her school are covered in plastic. Why is it important to cover the electric cords with plastic?

a)

Plastic is an insulator.

b)

Plastic is a conductor.

c)

Plastic is strong.

d)

Plastic will melt.

92.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
93.
Two batteries in a circuit make the lights in the circuit brighter than one battery.
a)
true
b)
false
94.
If the lights are off, the circuit is
a)
closed
b)
open
95.
In a parallel circuit the current
a)
makes one circle
b)
stays in one path
c)
splits and goes through two components
96.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
97.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
98.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
99.
what kind of circuit is this?
a)
parallel
b)
series
c)
chris barton
d)
open
100.
This circuit has more than one loop. When one light goes out, the others stay on. 
a)
closed circuit
b)
series circuit
c)
parallel circuit
d)
open circuit
101.

After returning from a winter vacation, a boy wanted to heat his home using electricity. The electricity was transformed into -

a)

Mechanical energy

b)

Superior energy

c)

Thermal energy

d)

Light energy

102.

Why are Christmas lights wired in parallel?

a)

It is cheaper to make

b)

You can make longer strands

c)

It uses less electricity

d)

If a light breaks, the others keep working

103.

If you increase the voltage across a resistor, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

104.

If you increase the size of the resistor and keep the voltage the same, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

105.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
106.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
107.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
108.
This is the symbol for 
a)
An Ammeter
b)
A Voltmeter
c)
A Meter
d)
A Motor
109.
Which of the following answer choices correctly describes the image? 
a)
Series circuit - Bulbs are lit
b)
Series circuit - Bulbs are off
c)
Parallel circuit - Bulbs are lit
d)
Parallel circuit - Bulbs are off
110.
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
111.
Lightbulbs use electricity to make light. What else do lightbulbs often give off?
a)
Food energy
b)
Heat Energy
c)
Solar Energy
d)
Wind Energy
112.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
a battery
d)
a single cell
113.

1. Which switch or switches must be closed to make the lamps light?

a)

Only switch 1

b)

Only switch 1

c)

Switches 1 and 2

d)

Switches 1 , 2 and 3

114.

Peter has connected two bulbs across two batteries in a simple circuit. How can she make the bulbs dimmer?

a)

Replace one of the batteries with a section of wire

b)

Replace one of the bulbs with a section of wire

c)

Replace one of the batteries with a cork

d)

Replace the batteries for more wire

115.

If lamp 1 is unscrewed from its holder, what will happen to lamp 2?

a)

It will get brighter

b)

It will stay the same brightness

c)

It will go out

d)

Nothing will happen

116.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
117.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
118.

Ammeters must be connected in

a)

Series

b)

Parallel

c)

Time

d)

Current

119.

Voltmeters must be connected in

a)

Series

b)

Parallel

c)

Time

d)

Potential difference

120.

The reading on Ammeter 1 is 6A. What is the reading on ammeter 2?

a)

2A

b)

3A

c)

6A

d)

0A

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