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11/14/24 ENERGY & RADIOACTIVITY PRACTICE TEST

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

All types of changes require _____.

a)

gravity

b)

gravy

c)

energy

d)

heat

2.

Which of the following statements is the law of the conservation of energy?

a)

Energy can be created but not destroyed. And energy can be transformed or converted from one form of energy to another.

b)

Energy can neither be created or destroyed. Energy is only transformed or converted from one form of energy to another.

c)

Energy cannot be created but is destroyed when it is used. Energy is transformed or converted from one form of energy to another until it decreases to nothing.

d)

Energy can be created and destroyed. Energy is created when objects move and it is destroyed when they stop moving.

3.

Energy from the kinetic energy of particles.

a)

nuclear

b)

chemical

c)

mechanical

d)

electrical

e)

thermal

4.

The SI unit for energy is the _____.

a)

watt, W

b)

energon, E

c)

joule, J

d)

newton, N

5.

What type of heat transfer occurs when you touch something that feels hot?

a)

convection

b)

conduction

c)

radiation

6.

What type of heat transfer occurs when warm air circulates in a cool room to warm the room?

a)

convection

b)

conduction

c)

radiation

7.

What type of heat transfer occurs when you feel the heat of a hot pot on a stove before you touch it?

a)

convection

b)

conduction

c)

radiation

8.

Heat energy always transfers from a substance that has a _____ temperature to a substance that has a ____ temperature.

a)

high / low

b)

low / high

9.

Heat transfer stops between two substances when the substances have ______.

a)

different temperatures

b)

the same temperature

10.

The energy of motion is ___ energy.

a)

potential

b)

kinetic

c)

elastic

d)

chemical

11.

The energy of position is ___ energy.

a)

potential

b)

kinetic

c)

elastic

d)

chemical

12.

Which of the following correctly sequences the energy transformations that take place in a light bulb?

a)

CE => LE + TE

b)

EE => CE => LE

c)

EE => LE + TE

d)

KE => EE => TE

13.

Which of the following correctly sequences the energy transformations that take place in the engine of this car?

a)

CE => TE => ME

b)

ME => TE => ME

c)

CE => KE => TE

d)

KE => ME => TE

14.

Which of the following correctly sequences the energy transformations that take place in this electric car?

a)

EE => TE => ME

b)

EE => TE

c)

EE => TE => ME

d)

CE => EE => ME

15.

Which of the following correctly sequences the energy transformations that take place in this electric power plant?

a)

TE => CE => EE

b)

CE => TE => ME => EE

c)

ME => TE => CE => EE

d)

ME => EE

16.

The temperature of a substance is the average ___ energy of the particles that make up the substance.

a)

potential

b)

chemical

c)

nuclear

d)

kinetic

17.

The more energy transformations that take place in a device, machine, or process, the ___ efficient it is.

a)

less

b)

more

18.

Incandescent light bulbs are less efficient than fluorescent and LED light bulbs because they produce more ___ energy.

a)

light

b)

thermal

c)

nuclear

d)

kinetic

19.

Batteries convert ___ energy to ___ energy.

a)

thermal / chemical

b)

electrical / thermal

c)

chemical / electrical

d)

chemical / thermal

20.

A ball with a mass of 0.5 kg is thrown with a velocity of 2.0 m/s. What is its kinetic energy?

Use KE = 1/2mv2 and don't forget to square v first!

a)

0.5 J

b)

1 .0 J

c)

2 .0 J

d)

1.5 J

21.

A toy car has a speed of 1.5 m/s and a mass of 3 kg. What is its kinetic energy?

KE = 1/2mv2

a)

4.5 J

b)

2.7 J

c)

2.3 J

d)

3.4 J

22.

A textbook is sitting on the edge of a desk that is 1.3 m above the floor. The textbook has a mass of 1.2 kg, so its gravitational potential energy is ___.

Use GPE = mgh and use g = 10.

a)

5.7 J

b)

8.9 J

c)

12.4 J

d)

15.6 J

23.

A basketball has a mass of 0.60 kg. it is perched on the rim just before it goes in. The rim is 3.0 meters high. How much gravitational potential energy does the basketball have?

GPE = mgh

a)

18 J

b)

1.8 J

c)

5 J

d)

0.5 J

24.

Energy is the ability to do ___, which is the ability to move an object.

a)

do

b)

work

c)

hair

d)

you

25.

When two objects and or sustances come in contact with each other friction can be produced.

Friction can produce ___ energy, which may or may not be a waste energy.

a)

chemical

b)

thermal

c)

elastic

d)

nuclear

26.

The Goliath roller coaster at Six Flags has more ___ than ___ at the top of this hill.

a)

KE / PE

b)

PE / KE

27.

The Goliath roller coaster at Six Flags has more ___ than ___ at the bottom of this hill.

a)

KE / PE

b)

PE / KE

28.

When the nuclei of an element spontaneously change into the nuclei of another element, this process is called ____.

a)

convection

b)

radioactivity

c)

decomposition

d)

solubility

29.

Radioactive nuclei produce two types of particles and a specific type of radiation.

They are ___ particles, ___ particles, and ___ rays.


a)

proton , neutron, and electron

b)

alpha , beta, gamma

c)

eenee, meenee, moe

d)

hot, warm, cold

30.

The LEAST penetrating type of radioactivity is ___ and the MOST penetrating type of radioactivity is ___.

a)

alpha , beta

b)

beta , gamma

c)

alpha , gamma

d)

gamma , alpha

31.

During beta decay, a(n) ___ turns into a(n) ___ when it emits a beta particle.

a)

proton , neutron

b)

electron , proton

c)

neutron , electron

d)

neutron , proton

32.

A beta particle is a ___ and an alpha particle is a ___.

a)

fast moving electron, helium nucleus

b)

slow moving proton , magnesium nucleus

c)

fast moving neutron , oxygen nucleus

d)

slow moving electron , sulfur nucleus

33.

If a sodium nucleus undergoes beta decay, it changes into a ___ nucleus.

a)

neon

b)

magnesium

c)

aluminum

d)

silicon

34.

If a carbon nucleus undergoes alpha decay, it changes into a ___ nucleus.

a)

oxygen

b)

nitrogen

c)

boron

d)

beryllium

35.

Which coefficient set will balance:

MnO2(s) + Mg(s) => Mn(s) + MgO(s) ?

a)

2,2,1,1

b)

1,2,2,1

c)

1,3,3,2

d)

1,2,1,2

36.

Which coefficient set will balance:

Cl2(g) + CsI(aq) => CsCl(aq) + I2(s) ?

a)

2,2,1,1

b)

1,2,2,1

c)

1,3,3,2

d)

1,1,2,2

37.

Which coefficient set will balance:

K2O(s) + H2O(l) => KOH(aq) ?

a)

2,2,1

b)

1,2,2

c)

1,1,2

d)

1,2,1

38.

The black spheres are ___.

a)

protons

b)

neutrons

c)

electrons

d)

croutons

39.

The white spheres are ___.

a)

protons

b)

neutrons

c)

electrons

d)

croutons

40.

The green spheres are ___.

a)

protons

b)

neutrons

c)

electrons

d)

croutons