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Science > science final > Flashcards

science final Flashcards

1
Q

what was the average speed of the egg drop capsules that did not effectively protect the raw eggs from the roof drop?

A

17 fps

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2
Q

what are the three major things you have to include in your go-kart written work to get full credit

A

measurements, how you made it (written), speed (start, curve, straight, ending)

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3
Q

what are 2 ways you gokart could be disqualified during inspection?

A

too long, over 48 inches, use leaf blowers

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4
Q

energy is the ability to cause

A

change

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5
Q

a bowling ball striking the pins is a good example of what type of energy

A

kinetic

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6
Q

which is not a form of potential energy

A

thermal

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7
Q

the total energy of an object or group of objects due to large scale motions and interactions is called

A

mechanical energy

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8
Q

which type of energy is the “waste energy” generated when energy is used

A

thermal energy

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9
Q

which renewable energy source is most likely to produce pollutants when used

A

biomas

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10
Q

which energy transformation occurs when brakes are used on a bicycle

A

kinetic to thermal

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11
Q

which type of energy is due to the motion of particles within an object

A

thermal

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12
Q

before you drop a ball, what type of energy is present

A

potential

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13
Q

when you stretch a rubber band, you are storing another form of potential energy called

A

elastic

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14
Q

which is an example of a wheel and avle

A

a screw driver

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15
Q

what is a good example of a second class lever

A

wheelbarrow

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16
Q

the point at which a lever pivots is known as a

A

fulcrum

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17
Q

the mechanical advantage of a pulley system can be calculated by the

A

number of sections of the rope pulling up on the object

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18
Q

what is the mechanical advantage of an inclined plane

A

length divided by height

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19
Q

solve for work

A

(work = force x distance) w = fd

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20
Q

what type of force is a push or a pull on one object by another that is touching it

A

contact force

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21
Q

what do we call the combination of all forces acting on an object

A

net force

22
Q

what do scientists call the gravitational force exerted on an object

A

weight

23
Q

the attractive force that exists between all objects that have mass is called

A

gravity

24
Q

what type of force resists the motion of two surfaces that are touching

A

friction

25
Q

this is usually measured in Kg and consists of the amount of matter an object has

A

mass

26
Q

the tendency of an object to resist a change in its motion is called

A

inertia

27
Q

if forces acting on an object combine and form a net force of xero you will have

A

balanced forces

28
Q

a crumpled up piece of paper that is dropped and falling through the air is experiencing this type of friction

A

fluid

29
Q

a push or pull on an object is called what in science

A

force

30
Q

define Newtons 1st law of motion in your own words and give an example

A

if the net force of an object is zero the motion of the object does not change

if you want a ball to turn or stop then it will be at rest - when you drop a ball its at rest

31
Q

two states besides hawaii and california that have “spacewatch telescopes” to detect approaching asteroids

A

arizona and new mexico

32
Q

what is any motion in which an object is moving along a curved path

A

circular

33
Q

what do you call the perpendicular force to the direction of circular motion

A

centripetal

34
Q

baseball being hit by a bat, a puch being slapped by a stick, a putter tapping a golf ball are all examples of

A

opposite forces

35
Q

the product of an object’s mass and velocity is considered

A

momentum

36
Q

billiard balls gain the momentum lost by the cue ball, this is an example of

A

the law of conservation of momentum

37
Q

define momentum in your own words

A

especially when moving at a high speed the ability/how fast something can be stopped

38
Q

what do we call the starting point that describes the location, or position of an object

A

reference point

39
Q

the complete description of your position includes

A

distance direction, and a reference point

40
Q

how many signals from satellites are typically used to determine the position of GPS

A

4

41
Q

the measure of the distance an object travels per unit of time would be a good definition of

A

speed

42
Q

what do we call the rate of change of position in which the same distance is traveled each second

A

constant speed

43
Q

the speed at a specific instant in time is called

A

instantaneous speed

44
Q

the total distance traveled divided by the total time taken to travel that distance is known as

A

average speed

45
Q

the steeper lines in a distance-time graph, indicate…

A

faster speeds

46
Q

which of these is the best example of displacement in the context of chapter 1

A

difference between the initial position and the final position

47
Q

if you travel 65 mph south you have given a measurement of

A

speed

48
Q

when a car’s velocity is changing so is the

A

acceleration

49
Q

if you know the total distance and the time is takes for an object to travel that distance you can determine

A

average speed

50
Q

what is the equation for acceleration

A

a = final speed - initial speed / time

Science (6 decks)

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