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Q4_G7_EnrichedScience

Total questions: 54

Worksheet time: 55mins

Name
Class
Date
1.

Jessica jogs on a path that is 25km long to get to a park that is south of the jogging path. If it takes Jessica 2.5 hours then what is her speed?

a)

25 km/hr

b)

10km/h

c)

10km/hr south

d)

10m/hr

2.

Jessica jogs on a path that is 25km long to get to a park that is south of the jogging path. If it takes Jessica 2.5 hours then what is her velocity?

a)

10km/hr

b)

10km/hr south

c)

10km/hr north

d)

1km/hr

3.

How much time does it take to a person to walk 12 km north at a velocity of 6.5 km / hr?

a)

1.85hr

b)

2hrs

c)

1.85 hours

d)

1.7hrs

4.

Distance and displacement are equal. True or False?

a)

False

b)

True

5.

Total length path taken of a moving object ___

a)

time

b)

motion

c)

distance

d)

velocity

6.

the change in the position of an object where the distance betwee n the two positions should be the shortest?

a)

acceleration

b)

distance

c)

displacement

d)

motion

7.

this formula is used for right-angled distances

a)

formula for motion

b)

pythagorean theorem

c)

algebraic expression

d)

none of the above

8.

this refers to how far an object moves in a certain amount of time

a)

distance

b)

speed

c)

motion

d)

time

9.

formula for speed

a)

s=d/t

b)

s=dt

c)

s=1/t

d)

s=t/d

10.

______refers to the rate of the change of an object's position with respect to a frame of reference and time

a)

distance

b)

time

c)

speed

d)

velocity

11.

formula for velocity

a)

v=dt

b)

v=t/d

c)

v=1/t

d)

v=di/t

12.

____refers to the rate at which an object changes its velocity

a)

velocity

b)

acceleration

c)

distance

d)

time

13.

the rate of slowing down or a negative value for acceleration

a)

deceleration

b)

velocity

c)

time

d)

speed

14.

____ specified by magnitude and direction

a)

distance

b)

acceleration

c)

vector

d)

speed

15.

___specified by magnitude only

a)

scalar

b)

speed

c)

vector

d)

time

16.

Determine if scalar or vector : weight

a)

vector

b)

Scalar

17.

Determine if scalar or vector : temperature

a)

scalar

b)

vector

18.

Determine if scalar or vector : energy

a)

scalar

b)

vector

19.

Determine if scalar or vector : time

a)

scalar

b)

vector

20.

Determine if scalar or vector : force

a)

scalar

b)

vector

21.

Determine if scalar or vector : speed

a)

scalar

b)

vector

22.

Determine if scalar or vector : velocity

a)

scalar

b)

vector

23.

Determine if scalar or vector : displacement

a)

scalar

b)

vector

24.

Determine if scalar or vector : dencity

a)

scalar

b)

vector

25.

Determine if scalar or vector : mass

a)

scalar

b)

vector

26.

Determine if scalar or vector : distance

a)

scalar

b)

vector

27.

A skater increases velocity from 2.0 m/s to 10.0 m/s in 3 seconds. What is the acceleration?

a)

4 m/s

b)

2 m/s

c)

2.7 m/s

d)

8 m/s

28.

A car accelerates at a rate of 3.0 m/s^2. If its original speed is 8.0 m/s, how many seconds will it take the car to reach a final speed of 25.0 m/s?

a)

4.33 seconds

b)

5 seconds

c)

5.67 seconds

d)

none of the above

29.

A cart rolling down an incline plane for 5.0 seconds has an acceleration of 4.0 m/sec^2. If the cart has a beginning speed of 2.0 m/sec, what is the formula?

a)

Vf= (Acc x Change in Time) + Vi

b)

V= AT

c)

Acc = Vf-Vi

d)

none of the above

30.

A cart rolling down an incline plane for 5.0 seconds has an acceleration of 4.0 m/sec^2. If the cart has a beginning speed of 2.0 m/sec, what is the final speed?

a)

20 m/s

b)

5 m/s

c)

22 m/s

d)

40 m/s

31.

Noel rushes 40m toward his truck. He notices he forgot his shoes and returns back to his house. His total travel time is 60s. What is his average speed? what is his average velocity?

a)

velocity = 1.33 m/s
speed = 1.33 m/s

b)

Velocity = 0 m/s
speed = 1.33 m/s

32.

If you walked 50m from your house to your friend's house, then another 50m from your friend's house to your school, what is you total distance and displacement?

a)

D = 100 meters
Di = 70.71 m NE

b)

D = 100 meters
Di = 70.71 m NW

33.

A car accelerates from 10 km/h to 80 km/h in 8.0 s. What is the car's acceleration?

a)

A= 8.75 km/hr

b)

A = 2.43 m/s2

34.

Samantha walked 5 km/hr. How long did it take her to travel 1500 m?

a)

30hrs

b)

3 hrs

c)

0.3hr

35.

A repeating and periodic disturbance that travels through a medium from one location to another.

a)

surface

b)

wave

c)

magnet

36.

A wave with particles that move in a direction perpendicular to the direction that the wave moves.

a)

transverse wave

b)

longitudinal wave

c)

surface

37.

A wave with particles that move in a direction parallel to the direction that the wave moves

a)

transverse

b)

longitudinal

c)

surface

38.

a wave with particles that move in circular motion

a)

transverse

b)

longitudinal

c)

surface

39.

a wave that is not capable to transmitting energy through a vacuum

a)

microwave

b)

mechanical

c)

electromagnetic

40.

wave that is used for communication

a)

mechanical wave

b)

microwave

c)

radio waves

d)

infrared wave

41.

used for cooking food, communications, data, and video

a)

electromagnetic wave

b)

infrared wave

c)

microwave

d)

radio wave

42.

a large spectrum of light with size ranging from 780mm to 1 mm

a)

infrared wave

b)

radio wave

c)

microwave

43.

the segment of electromagnetic spectrum that the human eye can view

a)

infrared light

b)

radio wave

c)

visible light

44.

have shorter wavelength than visible light

a)

light bulb

b)

ultraviolet light

c)

radio wave

45.

transverse waves that have extremely narrow wavelengths

a)

Xrays

b)

gamma rays

c)

microwave

d)

infrared light

46.

a form of electromagnetic radiation that possesses tremendous energy and penetrating power.

a)

gamma rays

b)

xrays

c)

microwaves

d)

radio waves

47.

The highest point of the wave ____

a)

trough

b)

wavelength

c)

crest

d)

amplitude

48.

opposite of the crest

a)

trough

b)

crest

c)

wavelength

d)

amplitude

49.

distance from crest to crest

a)

amplitude

b)

wavelength

c)

trough

d)

frequency

50.

the number iof crest/waves that pass a fixed point per second

a)

trough

b)

crest

c)

frequency

d)

amplitude

51.

the time to make one complete cycle wave cycle which usually expressed in seconds

a)

amplitude

b)

period or time

c)

wave speed

d)

crest

52.

the distance traveled by a wave per unit of time

a)

distance

b)

speed

c)

wave length

d)

wave speed

53.

A wave a speed of 50Hz and wavelength of 10m. What is the speed of the wave?

a)

50 m/s

b)

5 m/s

c)

500 m/s

d)

0.50 m/s

54.

Extreme waves along ocean waters sometimes referred to as freak waves or rogue waves are a focus of much research among scientists. Several merchant reports rogue waves which are estimated to be 25 meters high and 26 meters long. Assuming that these waves travel at speeds of 6.5 m/s, determine the frequency and the period of these waves.

a)

f = 0.26 Hz
t = 3.85 secs

b)

f = 0.25 Hz
t = 4 secs