1st Quarter Exam

Question 1

The amount of growth, its value changes according to the changes in the other variables.

Answer 1

Dependent Variable

Question 2

You change it to see how it will affect the dependent variable.

Answer 2

Independent Variable

Question 3

A light bulb is an example of ________.

Answer 3

technology

Question 4

The rate of change of velocity

Answer 4

Acceleration

Question 5

The tendency of an object to resist any change in its motion.

Answer 5

Inertia

Question 6

An object moving at a constant velocity keeps moving at that velocity unless a net force acts on it. If an object is at rest, it stays at rest unless a net force acts on it.

Answer 6

Newton’s first law of motion (law of inertia)

Question 7

An unbalanced force causing an object to move toward the center.

Answer 7

Centripetal force

Question 8

When an object is influenced only by the force of gravity.

Weightlessness

Answer 8

Free fall

Question 9

In the absence of air, two objects fall at the _____ rate.

Answer 9

Same

Question 10

A sloping surface that reduces the amount of force required to do work.

Answer 10

Inclined plane

Question 11

A material that doesn’t allow heat to flow through it easily.

Answer 11

Insulator

Question 12

Material through which electric or heat moves through easily.

Answer 12

Conductor

Question 13

Example of a heat mover:

Answer 13

fridge

Question 14

A heat engine, usually found in cars, burns fuel inside the engine in chambers called cylinders. Examples are:

Answer 14

Internal Combustion Engine

Ex: diesel and gas engines

Question 15

0.001

Answer 15

milli-

Question 16

1,000

Answer 16

kilo-

Question 17

0.01

Answer 17

centi-

Question 18

The amount of matter in an object.

Answer 18

mass

Question 19

The SI unit for temperature.

Answer 19

kelvin

Question 20

The SI unit for time.

Answer 20

second

Question 21

The SI unit for mass.

Answer 21

kilogram

Question 22

Derived unit of volume.

Answer 22

cubic centimeter

Question 23

The SI unit for length.

Answer 23

meter

Question 24

y-axis

Answer 24

dependent variable

Question 25

Standards that are universally accepted and understood by scientists throughout the world.

Answer 25

SI

Question 26

The most common type of heating system.

Answer 26

Forced air

Question 27

Heats rooms inside a building without using mechanical devices to move heat from one area to another.

Answer 27

Passive solar heating | Ex: greenhouse

Question 28

Heats room using mechanical devices to absorb radiant energy from the sun.

Answer 28

Active solar heating | Ex: solar panels

Question 29

A change in location and direction: how much an object is moved from its original location.

Answer 29

Displacement

Question 30

Momentum is directly related to _____.

Answer 30

mass

Question 31

No momentum=

Answer 31

no movement

Question 32

The gravitational force exerted on an object.

Answer 32

Weight

Question 33

Acceleration=

Answer 33

Vf-Vi/time measured in m/s2

Question 34

IMA of an inclined plane

Answer 34

Length/height

Question 35

Work=

Answer 35

forceXdirection in joules

Question 36

________ can be transferred from one object to another.

Answer 36

Momentum

Question 37

Decreases when an object is closer to the ground.

Answer 37

Potential energy

Question 38

True/False. In car engines, burning fuel produces heat and causes gases to expand, producing kinetic energy.

Answer 38

True

Question 39

Calories are produced by:

Answer 39

Carbs and fats

Question 40

The force applied to the machine.

Answer 40

Effort force

Question 41

The force applied by the machine to overcome resistance.

Answer 41

Resistance force

Question 42

Under certain conditions can you get more energy out of a machine than you put in.

Answer 42

No

Question 43

True/False. Some machines don't multiply the force applied to them.

Answer 43

True

Question 44

True/False. All three levers are in the human body.

Answer 44

True

Question 45

In order for there to be work there must be ________.

Answer 45

Movement

Question 46

The transfer of thermal energy through matter by the direct contact of particles.

Answer 46

Conduction

Question 47

The transfer of energy in a fluid by the movement of the heated particles.

Answer 47

Convection

Question 48

The transfer of electromagnetic waves.

Answer 48

Radiation

Question 49

The sum of the kinetic and potential energy of all the molecules in an object.

Answer 49

Thermal energy

Question 50

The thermal energy that flows from something at a higher temperature to something at a lower.

Answer 50

Heat