Question

13. An object's mass and velocity determines which of the following?

An object's gravitational energy

An object's kinetic energy

An object's activation energy

An object's potential energy

14.

What happens to the kinetic energy of a bowling ball once it strikes pins?

It increases.

It stays the same.

It transforms to mechanical energy.

It decreases.

15.The force that is exerted on a machine is referred to as which type of force?

Advantage force

Output force

Input force

Initiation force

16. Which of the following are two force carrier particles for strong forces?

Pions and bosons

Gluons and electrons

Gluons and pions

Quarks and gluons

17.Scientists use the color change in quarks to do which of the following?

Determine the electrical charges

Differentiate similar quarks in a single particle

Differentiate one atom from another

Identify protons and electrons

18.
In a weak interaction, what accompanies the decay of subatomic particles?

Decrease in mass

Release of energy

Absorption of energy

Increase in mass

19.Which of the following describes an electric field around a negative charge?

It will repel a negative test charge

It will repel a positive test charge

It will attract a negative test charge

It will attract a positive test charge

20.
What is the correct term for areas in which groups of atoms are clustered together with their magnetic fields aligned?

Magnetism

North pole

Magnetic domain

Declination

21.Magnetic fields can be created by which of the following?

Voltage sources

Stationary electric charges

Electric current

Electric field

22. What is produced by the combination of an electric and magnetic field?

Electromagnetic fields

Magnetic domains

Electric current

Voltage

23.Which electromagnetic waves are felt as heat?

Visible light

Ultraviolet

Microwaves

Infrared

24.
The mass of how many objects is included in the universal gravitation equation?

Three

Two

Six

One

25.According to Einstein's Theory of General Relativity, what dimension is added to the three dimensions of space to form the spacetime model?

Time

Length

Depth

Width

26. According to Newton's Law of Universal Gravitation, what is the force that holds planets in their orbits?

Gravity

Mass

Acceleration

Pressure

27. All objects are affected equally by the gravitational field regardless of their mass.

True

False

28. When electrical energy is sent to the metal on a stovetop, what happens to the level of thermal energy in the metal?

It does not change.

It decreases.

It can either increase or decrease.

It increases.

29. Which type of chemical reaction usually does NOT occur without an external source of energy?

Oxidation-reduction

Exothermic

Nuclear

Endothermic

30.What is the direction of flow for electrical energy within a direct current electricity circuit?

From a positive terminal to a negative terminal

From a negative terminal to a positive terminal

From a positive terminal to a positive terminal

From a negative terminal to a negative terminal

31. Which type of radiant energy is used to kill bacteria on hospital equipment?

Gamma rays

X-rays

Ultraviolet radiation

Infrared radiation

32.
What type of particle is propelled into an atomic nucleus, such as uranium-235, to begin a nuclear fission reaction?

Neutron

Proton

Neutrino

Electron

33.What process do hospitals use to get clear images of the human body structures and functions?

Magnetic resonance imaging

X-rays

Magnetic relativity interference

Magnetic radioactivity indicator

34.
NOT all elastic objects have an elastic limit.

True

False

35.According to the inverse square law of sound, the intensity of sound waves at a distance of 20 feet from a sound source is what fraction of the intensity of the sound waves at a distance of 10 feet?

1/8

1/16

1/4

1/2

36.When an object that has been lifted in a gravitational field is released, gravitational potential energy is converted into what form of energy?

Chemical

Electromagnetic

Elastic

Kinetic

37.When a person climbs stairs, what happens to the gravitational potential energy of his/her body?

It is stored.

It becomes zero.

It decreases.

It remains constant.

38.
The equation "Δ heat = Δ internal energy + work" expresses which Law of Thermodynamics?

Third

Second

Fourth

First

39.Which of the following is a system that is receiving heat energy from its surroundings?

Endothermic reaction

Exothermic reaction

Transformation reaction

Equilibrium reaction

40.Which of the following is a system that is receiving heat energy from its surroundings?

Endothermic reaction

Exothermic reaction

Transformation reaction

Equilibrium reaction

41.What is referred to as the highest point of a transverse wave?

Candela

Quark

Crest

Trough

42.Waves travel at different speeds through air and water.

True

False

43.
Which of the following can transfer energy waves through the earth's crust?

A cellular device

An earthquake

A laser

A tsunami

Answer 1

And 13) An object's mass and velocity determines the object's kinetic energy. Because the kinetic energy is equal to the half of the mass times squared velocity.

Ans 14) When the bowling ball started moving it has kinetic energy. It's some kinetic energy loss in friction, and when it strikes with the pin, some energy loss in producing sound and some transferred to the pin. Hence the kinetic energy decreases.

Ans 15) The force that is exerted on a machine is referred to as input force. With this force the machine starts working and the force that is exerted by the machine is referred to as output force.

Ans 16) The two carrier particles for the strong force are quarks and gluons. When they interact they exchange gluons that glue the quarks with each other. It is as strong as proton and neutron in the nucleus.

Ans 17) Scientist use the color change in quarks to determine the electrical charge on the quarks.

Ans 18) When a sub-atomic particle undergoes decay in a weak interaction, it's mass decreases. In the decay the removal of the Helium nucleus occurs which results in the loss of two protons and two neutrons. So the mass decreases.

Ans 19) Electric field around a negative charge will repel a negative test charge because same charges repel each other.

Ans 20) The area in which group of atoms clustered together with their magnetic field aligned is termed as magnetic domains. A ferromagnetic materials have large constant magnetization field which creates a large magnetic field in which atoms are aligned in a specific direction.