Mid-Term Exam--Survey of the Sciences

1.

3 points

Which of the following is not encompassed by science?

A parent suspects their child gets hyper when eating certain foods and tracks their eating habits and behavior patterns

A new home owner decides to look for water using a forked stick because someone said it would work

A gardener plants multiple plots to test which fertilizer is the best for the plants growth.

A doctor conducts a double blind drug trial.

2.

3 points

The scientific method relies heavily on all of the following except _______.

observations

predictions

experimentation

assumptions

3.

3 points

Which branch of science studies the origin, evolution and present state of Earth?

biology

chemistry

geology

physics

4.

3 points

Car A is traveling to a location that is 100 miles away. Car B is going to the same location but it is 200 miles away. How can the cars arrive at the same time?

There is not enough information given

Car A must drive twice as fast as Car B

Car A must drive the same speed as Car B

Car B must drive twice as fast as Car A

5.

3 points

Acceleration involves ______________

time, speed and distance

changes in force and time

speed and distance

changes in speed, changes in direction of both

6.

3 points

According to Newton's Third Law, every action has an equal and opposite reaction. This means that the force is the __________ and the results of the force ___________

different, can be different

different, are the same

same, are the same

same, can be different

7.

3 points

The Earth's gravity holds the moon in orbit, based on Newton's universal law of gravity. Why doesn't the force of the sun's gravity pull the moon out of orbit?

The combined mass of the moon and the sun results in lower gravitational force.

The distance between the moon and the sun results in a lower gravitational force

The combined mass of the moon and the Earth results in a lower gravitational force

The distance between the sun and the Earth results in a lower gravitation force

8.

3 points

Energy is _________

a force

not capable of being stored

power

the ability to do work

9.

3 points

All of the following energy sources are renewable except ______

wind

solar

hydroelectric

natural gas

10.

3 points

In a cup of coffee, the molecules are moving _____________ than the molecules in ice water

slower

the same speed

faster

There is not enough information provided to answer the question.

11.

3 points

Which of the following is not encompassed by the second law of thermodynamics?

Heat will not flow spontaneously from a cold to a hot body

No engine can be constructed to only change heat to useful work

Every isolated system becomes more disordered with time

Energy is conserved within a closed system

12.

3 points

What causes electrical current throughout a home?

Flow of electrons

Flow of protons

Flow of neutrons

Flow of quarks

13.

3 points

How can a magnetic field be generated?

Gravitational force

Static electrical force

Motions of electrical charges

Friction

14.

3 points

As you sit on the beach, you count the number of wave crests that crash every second. You are measuring the ______________.

velocity

amplitude

wavelength

frequency

15.

3 points

A significant difference between sound waves and electromagnetic waves is that ________ waves require a ______________

sound, vacuum

sound, medium

electromagnetic, vacuum

electromagnetic, medium

16.

3 points

Potassium has an atomic number of 19 and an atomic weight of 39. How many protons does Potassium have?

9

19

20

39

17.

3 points

Which of the following are found in the nucleus of an atom?

Electrons and protons

Electrons and neutrons

Neutrons and protons

Neutrons, electrons and protons

18.

3 points

Lasers use energy to stimulate electrons to undergo a(n) ________________ and then release photons

quantum leap

quantum step

electron jump

electron step

19.

3 points

Neon has a total of 10 electrons. How many electron shells does it possess?

1

2

3

4

20.

3 points

What type of chemical bonding occurs when two atoms share electrons equally?

Ionic bonds

Metallic bonds

Covalent bonds

Hydrogen bonds

21.

3 points

A baking soda "volcano" is made by mixing white vinegar with baking soda resulting in what type of chemical reaction?

Oxidation and reduction

Precipitation-solution

Acid-base

Polymerization

22.

3 points

Condensation results when ___________

a gas turns into a solid

a liquid turns into a solid

a solid turns into a gas

a gas turns into a liquid

23.

3 points

The ability of muscle to withstand pulling apart is known as ____________

tensile strength

compressive strength

shear strength

chemical strength

24.

3 points

Semiconductors are ____________

conductors

insulators

poor conductors and poor insulators

good conductors and poor insulators

25.

3 points

Which of the following statements best compares n-type and p-type semiconductors.

An n-type semiconductor acts as a positive, while a p-type has an extra electron

An n-type semiconductor has a moving electron, while a p-type is missing an electron

A p-type has an extra proton, while an n-type has an extra neutron

A p-type has an extra neutron, while an n-type has an extra proton

26.

3 points

The ratio of Carbon-12 to Carbon-13 can be utilized to identify the age of fossilized specimens due to the fact that ________________

carbon 13 has one additional electron

carbon 13 has one additional neutron

carbon 13 has one additional proton

carbon 13 has one additional nucleus

27.

3 points

Gamma radioactive decay can be measured as it emits a _____________

photon

2 neutron, 2 proton particle

an electron

an alpha particle

28.

3 points

After 3 half-lives have passed, how much uranium would be left?

One-third of the original sample

One-half of the original sample

One-fourth of the original sample

One-eighth of the original sample

29.

3 points

Which of the following statements best describes nuclear fusion?

A nucleus is split apart

Two nuclei are joined

A photon is emitted

Uranium decays

30.

3 points

Which of the following produces the most energy per fuel mass?

Fossil fuels

Nuclear fission

Nuclear fusion

Natural gas