Physical Science Unit 1 Test

1.

1 point

How do scientists answer questions?

By investigating.

By observing.

By creating a model.

By creating the question itself.

2.

1 point

What is precision?

A method of expressing a quantity as a number multiplied by 10 to the appropriate power.

The exactness of a measurement.

A description of how close a measurement is to the true value of the quantity measured.

A prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement.

3.

1 point

Which of the following statements are NOT in accordance with the kinetic theory of matter?

All matter is made of atoms and molecules. These atoms and molecules act like tiny particles that are always in motion.

The higher the temperature of the substance is, the faster the particles move.

Changes of state in matter are considered to be caused by an unknown phenomenon.

At the same temperature, more massive particles move slower than less massive ones.

4.

1 point

Which principle states that as the speed of a moving fluid increases, the pressure of a moving fluid decreases?

Pascal's Principle

Bernoulli's Principle

Archimedes' Principle

5.

1 point

Combinations of base units are called ___________.

Derived Units

SI Prefixes

SI Units

6.

1 point

Which of the following is NOT a chemical property?

Boiling Point

Reactivity

Flammability

7.

1 point

Which kind of graph is useful for when you want to compare similar data for several individual items or events?

Bar Graph

Model Graph

Pie Graph

Line Graph

8.

1 point

_____________ is the amount of force exerted on a given area of surface.

9.

1 point

Which of the following is a chemical change?

Dissolving

Cutting

Pounding

Rusting

10.

1 point

__________ is a measurement of how much matter is contained in a certain volume of a substance.

11.

1 point

The physical form of a substance is known as

State

Position

Fluid

Energy

12.

1 point

Every compound differs from the elements that it contains.

True

False

13.

1 point

Read the following:

"A change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of the fluid."

What principle is being described above?

Pascal's Principle

Bernoulli's Principle

Archimedes' Principle

14.

1 point

Which gas laws are directly proportional?

Charles's Law

Boyle's Law

Gay-Lussac's Law

15.

1 point

The more things that you change at a time during an experiment, the harder it is to make reliable conclusions.

True

False

16.

1 point

What is the SI Base Unit for mass?

kilogram

meter

pascal

gram

17.

1 point

The temperature at which a gas becomes a liquid is known as

Bernoulli's Principle

Boiling Point

Condensation Point

Melting Point

18.

1 point

______________ is the application of science for practical uses.

19.

1 point

Theories explain why something happens, and laws describe how something works.

True

False

20.

1 point

A group of atoms that are held together by chemical forces is known as

an atom.

an element.

a molecule.

a compound.

21.

1 point

The stronger the attraction between a liquid's particles is, the more viscous the liquid is.

True

False

22.

1 point

Zoology falls under which branch of science?

Biological Science

Physical Science

Earth Science

23.

1 point

What is the proper term for describing characteristics that can be observed without changing the identity of the substance?

Physical Properties

Physical Change

Chemical Change

Chemical Properties

24.

1 point

Which of the following is NOT a property of gas?

The particles in a gas are closely packed but they can still slide past each other.

They spread out easily and mix with one another.

Gases expand to fill their containers.

They have low densities and are compressible.

25.

1 point

The ___________ describe how the behavior of gases is affected by pressure, volume, and temperature.

26.

1 point

Which of the following is a gas-liquid mixture?

Cotton Fiber

Oobleck

Carbonated Drinks

Slime

27.

1 point

Mixtures can be separated by chemical changes, but compounds must be broken down by physical changes.

True

False

28.

1 point

All fluids exert an upward buoyant force on matter.

True

False

29.

1 point

Which changes of state require energy?

Condensation

Sublimation

Melting

Freezing

Evaporation

30.

1 point

Which states of matter are fluids?

Plasma

Gases

Solids

Liquids

31.

1 point

You can determine whether an object will float or sink by comparing the buoyant force on the object with the object's weight.

True

False

32.

1 point

Fluids exert pressure evenly in all directions.

True

False

33.

1 point

What term below means electrically charged?

stimulated

shock

chemical bond

ionized

34.

1 point

Identifying problems, planning experiments, recording observations, and correctly reporting data are some of the most important science skills.

True

False

35.

1 point

A scientific ______ describes a process in nature that can be tested by repeated experiments.

36.

1 point

What kind of mixture is a salad?

Homogeneous Mixture

Heterogeneous Mixture

37.

1 point

Which is NOT an indicator of a chemical change?

sudden movements

fizzing or foaming

production of sound, heat, light, or odor

color changes

38.

1 point

The SI unit of pressure is the ______.

39.

1 point

Which of the following is the term that describes the measure of the average kinetic energy of the particles in an object?

Heat

Thermal Energy

Temperature

Energy Transfer

40.

1 point

Neither mass nor energy can't be created or destroyed.

True

False

41.

1 point

___________ is observing, studying, and experimenting to find the nature of things.

42.

1 point

Which of the following is NOT a physical change?

Crushing a can of soda.

Melting an ice cream.

Ripening fruits and vegetables.

Cutting your hair.

43.

1 point

Fluids move faster through small areas than through larger areas, if the overall flow rate remains constant. Fluids also vary in the rate at which they flow.

True

False

44.

1 point

An explanation of how a natural process works is called a scientific _______.

45.

1 point

Which two substances are considered pure substances?

Mixtures

Elements

Compounds

Solution

46.

1 point

Read the following description in order to answer the following question:

"For a fixed amount of gas at a constant temperature, the volume of a gas increases as the gas's pressure decreases. Likewise, the volume of a gas decreases as the gas's pressure increases."

What gas law is being described?

Gay-Lussac's Law

Charles's Law

Boyle's Law

Archimedes' Principle