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Junior Cycle Science Physical World

Total questions: 50

Worksheet time: 39mins

Name
Class
Date
1.

the volume of irregular object is

a)

25 cm3

b)

50 cm3

c)

75 cm3

d)

125 cm3

2.
Read this scientific instrument to the nearest tenth. 
a)
6.3 mL
b)
6.6 mm
c)
6.6 mL
d)
6.3 mm
3.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
4.

What quantity does the instrument shown measure?

a)

Temperature

b)

Force

c)

Time

d)

Volume

5.

What units are used by the instrument shown?

a)

m/s

b)

N

c)

oC

d)

S

6.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
7.
An object with which of the following densities will float on water?
a)
0.7 g/cm3
b)
1.2 g/cm3
c)
3.5 g/cm3
d)
11.4 g/cm3
8.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
9.
Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?
a)
400 minutes
b)
100 minutes
c)
100 seconds 
d)
.25 seconds 
10.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
11.

What is the unit of Electrical Power?

a)

Joule

b)

Watt

c)

Where

d)

Amp

12.

Calculate the voltage applied when a 60 watt light-bulb uses a current of 5 amps

a)

300 volts

b)

30 volts

c)

12 volts

d)

0.08 volts

13.
What force causes an extension of 5 cm?
a)
0.8 N
b)
1.2 N
c)
1.0 N
d)
0.9 N
14.

Ohms Law states that voltage and current are directly proportional to each other. Which graph best represents a material behaving according to Ohm's law?

a)
b)
c)
d)
15.
Find the surface area of the rectangular prism.
a)
94 cm. squared
b)
60 cm. squared
c)
12 cm. squared
d)
19 cm. squared
16.
Does this table represent a proportional relationship?
a)
Yes
b)
No
17.
The application of scientific knowledge of materials and processes to benefit people is also known as...
a)
technology
b)
model
c)
society
d)
project
18.

It is a branch of Physics that studies the nature and behavior of light.

a)

Optics

b)

Nuclear Physics

c)

Thermodynamics

d)

Quantum Mechanics

19.

He is the one who invented the telescope.

a)

Isaac Newton (1643-1727)

b)

Galileo Galilei (1564-1642)

c)

Albert Einstein (1879-1955)

d)

James Clerk Maxwell (1831-1871)

20.

She is the first ever female scientist to win a Nobel Prize for discovering radioactivity.

a)

Paul Dirac (1902-1984)

b)

Richard Feynman (1918-1988)

c)

Marie Curie (1867-1934)

d)

Michael Faraday (1791-1867)

21.
What kind of circuit is this?
a)
series
b)
parallel
22.

LDR means

a)

Light Dependent Resistor

b)

Light Device Regulator

c)

Low Drive Resistor

23.

Choose the correct symbol for this component!

a)
b)
c)
d)
24.

Name this component

a)

resistor

b)

LED

c)

cell

d)

switch

25.

What reduces the electric current in a circuit?

a)

Circuit

b)

Resistance

c)

Electron

d)

Current

26.

What is this the electrical symbol for?

a)

Buzzer

b)

Switch

c)

Battery

d)

Resistor

27.

The circuit shown was used by a student to verify Ohms Law. Name the instrument labelled V

a)

Voltmeter

b)

Ammeter

c)

Voltameter

d)

Ohmmeter

28.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
29.
The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming -
a)
chemical energy to electrical to sound.
b)
electrical energy to thermal to light.
c)
sound energy to electrical to chemical.
d)
mechanical energy to electrical to sound.
30.
Which energy conversion is taking place when you put gasoline in a car?
a)
thermal -> electrical
b)
mechanical -> electrical
c)
chemical -> mechanical
d)
mechanical -> electromagnetic
31.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
32.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
33.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
34.
Where does most of the energy go for this transformation.
a)
heat
b)
electrical
c)
light
d)
joules
35.

Earth’s nearest star (our Sun) radiates this type of energy.

a)

Solar

b)

Coal

c)

Propane

d)

Oil

36.

What is the efficiency of a machine if 55.3 J of energy are consumed by the machine, but only 14.3 J of useful energy is produced by the machine?

a)

0.25 J

b)

26%

c)

386%

d)

3.86 J

37.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
38.

What kind of energy does an object possess when it's resting on top of the hill?

a)

Potential Energy

b)

Chemical Energy

c)

Kinetic Energy

d)

All of the above

39.

what is hydroelecrical power generation

a)

a source of energy that can be replaced in a relatively short period of time

b)

a source of energy that cannot be replaced as quickly as it is used

c)

the generation of electrical power using a source of moving water

d)

a non - renewable source

40.

Claim: the consumption of natural resources by humans has a negative impact on the environment. What data would provide evidence for this claim?

a)

Increased human lifespan and increased ice cap size

b)

Increased human population and decreased habitats for plants and animals

c)

Increased consumption of resources by humans and increased biodiversity (variety) in nature

d)

Increased of fossil fuel burning by humans and decreased use of other resources

41.

Some factories that burn coal produce smoke with harmful chemicals, such as sulfur. Scrubbers are devices that are attached to the smokestacks to reduce the amount of sulfur put into the atmosphere. To evaluate the effectiveness of these devices, what data would need to be collected?

a)

The average amount of sulfur in a certain amount of coal

b)

The amount of coal a factory burns each year and how much sulfur it emits (produces)

c)

The increase in the use of scrubbers by factories that burn coal

d)

The amount of sulfur emitted (produced) by a smokestack before and after the scrubber is attached

42.

Claim: Carbon dioxide (CO2) emissions can be reduced by increasing the amount of electricity produced by wind.

Which pair of graphs, showing data for CO2 emissions and wind production of electricity would support this claim?

a)
b)
c)
d)
43.

What is sustainability?

a)

Indicators

b)

Planning for future generations to use all of all the resources.

c)

Meeting the needs of the present.

d)

Meeting the needs of the present without compromising the needs of future generations.

44.

Which of the following would conserve energy and protect the environment and is also good working practice

a)

Buy materials from the cheapest country

b)

Transport materials by air

c)

Use lighter materials

d)

Reduce transport costs

45.

What energy conversion is occurring fro A to B to C in the diagram shown.

a)

Light to Heat to Kinetic

b)

Kinetic to Heat to Light

c)

Heat to Kinetic to Light

d)

Heat to Light to Kinetic

46.

Which bulb is more efficient at transforming electrical energy to light energy?

a)
b)
47.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move in both directions. 
48.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
49.

To use an LED, you need to connect it in a circuit with a...

a)

resistor

b)

capacitor

c)

transistor

d)

inductor

50.

What is ohm?

a)

Measures electrical resistance

b)

Measure electricity

c)

Bob esponja

d)

Measues circuits

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