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WorksheetsLost at Sea
Total questions: 65
Worksheet time: 50mins
Name
Class
Date
1.
What is the force that causes objects to fall to Earth?
a)
Air resistance
b)
Gravity
c)
Water resistance
d)
Pressure
2.
What is the name of the units that we measure force in?
a)
Einsteins
b)
Newtons
c)
Kg
d)
Metres
3.
In which direction does gravity act?
a)
Downwards
b)
Upwards
c)
In all directions
d)
Towards the centre of the Earth
4.
Which is the correct definition of a 'force'?
a)
An influence, which cannot be measured, that causes something to move, stop moving or change direction.
b)
An influence, which can be measured, that causes something to move, stop moving or change direction.
c)
Something which has power.
d)
An influence, which can be measured, that causes something to move.
5.
What force does a parachute use to slow things down before hitting the ground?
a)
Friction
b)
Air resistance
c)
Water resistance
d)
Wind
6.
What type of force is air resistance?
a)
Contact
b)
Non-contact
7.
When two objects rub together, what force do they produce
a)
Gravity
b)
Air resistance
c)
Friction
d)
Water resistance
8.
Which of these uses friction?
a)
A parachute
b)
A ball falling through the sky
c)
Brakes on a bike
d)
A wind turbine
9.
A push or a pull that starts, stops or changes the direction of an object
a)
force
b)
energy
c)
gravity
d)
motion
10.
Can you transfer energy to another object
a)
True
b)
False
11.
a)
Balanced
b)
Unbalanced
12.
a)
Balanced
b)
Unbalanced
13.
What is the net force?
a)
30 N left
b)
25 N right
c)
5 N left
d)
55 N right
14.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
15.
Calculate the Net Force.
a)
40N, Left
b)
40N, Right
c)
0N, Balanced
d)
75N, Right
16.
Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
17.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
18.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
19.
If the horse reared up on 2 legs what effect would it have on the pressure?
a)
it will exert half the pressure it did before
b)
it will exert the same pressure it did before
c)
it will exert twice the pressure it did before
d)
it will exert four times the pressure it did before
20.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the
ground
21.
Which of these animals would probably cause the greatest pressure on the ground?
a)
A fat cow with big feet
b)
A fat cow with small feet
c)
A calf with big feet
d)
A calf with small feet
22.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
23.
What is the difference between particles in a gas and a solid?
a)
gas particles are closer together
b)
solid particles move faster than gas particles
c)
solid particles expand on heating
d)
gas particles have more kinetic energy than solid particles
24.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
25.
Look at the pressure triangle. How do we calculate the area?
a)
f ÷ a
b)
f x p
c)
p x f
d)
f ÷ p
26.
Look at the pressure triangle. How do we calculate the force?
a)
f ÷ a
b)
f x p
c)
p x a
d)
f ÷ p
27.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
28.
True or false:
Pressure depends on depth
Pressure depends on depth
a)
true
b)
false
29.
Hooke's Law describes the behaviour of which kind of material under tension?
a)
plastic
b)
metals only
c)
elastic
d)
non-metals only
30.
A stiff material has a:
a)
high spring constant
b)
low spring constant
c)
spring constant of any value
d)
spring constant which is difficult to predict
31.
What subject is attracted to a magnet?
a)
Silver
b)
Water
c)
Metal
d)
Iron
32.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
33.
A north pole and a south pole will attract.
a)
True
b)
False
34.
True or False:
Most rocks are magnetic.
Most rocks are magnetic.
a)
True
b)
False
35.
True or False: All metals stick to magnets.
a)
True
b)
False
36.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
37.
Which statement is true?
a)
All Magnets have a North and South Pole
b)
All magnets can attract large objects
c)
Magnets can not pull through Solids.
d)
All Magnets have the Same shape and Size
38.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
39.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
40.
Which of the following best describes the tilt of the earth when it is summer in the southern hemisphere?
a)
The northern hemisphere is tilted toward the sun
b)
The northern hemisphere is tilted away from the sun
c)
The norther hemisphere is tilted neither toward or away from the sun
d)
Why are you talking about the northern hemisphere when you asked about the southern hemisphere?
41.
Which of the following best describes the tilt of the earth during the spring and fall equinoxes?
a)
The earth is tilted away from the sun (Northern hemisphere)
b)
The earth is tilted neither toward or away from the sun (tilt is side to side)
c)
The earth is tilted toward the sun (Northern hemisphere)
d)
The earth is not tilted during spring and fall
42.
What season is it in the Southern Hemisphere when it is fall in the Northern Hemisphere?
a)
winter
b)
spring
c)
summer
d)
fall
43.
One rotation of Earth is equal to
a)
a day.
b)
a year.
44.
What would seasons be like if Earth's axis were straight up and down?
a)
Seasons would be the same.
b)
Seasons would be more extreme.
c)
There would be no seasons.
45.
Where on Earth can you experience entire days of darkness?
a)
The equator
b)
The poles
c)
The Tropic of Cancer
d)
The Tropic of Capricorn
46.
During the phases of the Moon, the Moon appears to change shape. This change in appearance is due to the Moon...
a)
physically changing size and shape.
b)
moving closer and then farther away from Earth.
c)
reflecting a different amount of light due to alignment with Earth and the Sun.
d)
having craters on its surface.
47.
What part of the moon do we see from Earth?
a)
all of it
b)
the same side
c)
none of it
d)
only one quarter
48.
The moon seems to change shape from day to day in a cycle that lasts about a month as it goes through _.
a)
revolutions
b)
phases
c)
rotations
d)
eclipses
49.
As the moon's shape appears to get smaller, we say that the moon is _.
a)
swelling
b)
waxing
c)
waning
d)
disappearing
50.
About how long does it take the moon to make one complete cycle around the earth?
a)
65 days
b)
8 days
c)
365 days
d)
28 days
51.
The cycle of the moon lasts about a _.
a)
day
b)
year
c)
week
d)
month
52.
Phases of the moon in which the moon appears to be getting larger are referred to as _.
a)
waxing
b)
waning
c)
new
d)
eclipse
53.
This circuit is .....?
a)
open
b)
parallel
c)
closed
d)
shows the flow of electricity
54.
Which of the following can supply energy in an electric circuit?
a)
a conductor
b)
light bulb
c)
a wire
d)
a battery
55.
wood is a _____?
a)
conductor
b)
insulator
56.
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
57.
What kind of circuit is this?
a)
series
b)
parallel
58.
What type of circuit is show in the image?
a)
Series Circuit
b)
Parallel Circuit
59.
this is the symbol for a _____?
a)
switch
b)
light
c)
battery
d)
wires
60.
In a parallel circuit, if one connection is broken, all of the connections stop working.
a)
True
b)
False
61.
What is this symbol?
a)
Ammeter
b)
Wire
c)
Bulb
d)
Voltmeter
62.
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
63.
What is this symbol?
a)
Closed Switch
b)
Resistor
c)
Cell
d)
Battery
64.
What is this symbol?
a)
Wire
b)
Bulb
c)
Buzzer
d)
Ammeter
65.
The movement of electrons from atom to atom in a line results in a flow of _____.
a)
amperage.
b)
electric current.
c)
electromagnetic connectors.
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