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SIPC G8 Unit test 1

Total questions: 55

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

Force is measured in

a)

vector

b)

force

c)

Newtons

d)

Newton meter

2.

Force is a ________ quantity

a)

scalar

b)

vector

3.

What is produced in a forward reaction when NH4Cl is broken down?

a)

NH3+ HCl

b)

NH4 + Cl

c)

NH4 + HCl

d)

N, H, Cl

4.

What does this sign represent?

a)

reaction is stable

b)

reaction rates are reacting slowly

c)

reaction rates are reacting fast

d)

reaction rates are equilibrium

5.

Draw a straight line where the equilibrium is.

6.

What is the balanced equation when N2 reacts with H2.

a)

1,2,3

b)

0,3,2

c)

1,3,2

d)

2,3,1

7.

the forward reaction is a _______ process and the backwards is a _______ process

a)

endothermic/ exothermic

b)

exothermic/ endothermic

8.

What is dynamic equilibrium?

a)

When the products and reactants are the same

b)

when the product continues to change faster than reactant

c)

when there is a constant change from products to reactants

d)

when the reactant continues to change faster than product

9.

which direction would friction go

a)

to the right

b)

up

c)

to the left

d)

down

10.

resultant force and net force the same

a)

True

b)

false

11.

Accelerate is to ______

a)

slow down

b)

speed up

c)

go up

d)

go down

12.

drag and friction are examples resistance forces

a)

true

b)

false

13.

Which force is caused by gravity?

a)

weight

b)

upthrust

c)

prevailing winds

d)

water resistance

14.

what force is caused by the boat moving forward?

a)

prevailing winds

b)

upthrust

c)

weight

d)

water resistance

15.

Select all the following that are fluids.

a)

wind

b)

water

c)

fire

d)

dirt

16.

Explain what will happen to the air resistance of the skydiver when they open their parachute.

4 lines
17.

Why would a sailing boat slow down if the wind speed reduces?

a)

because of the balance of the weight

b)

because of the wind force slows down

c)

because the force from the sails will get less

18.

the weight of the boat is 2000 N. How large is the upthrust?

a)

20 N

b)

2000 N

c)

200 N

d)

5 N

19.

terminal velocity is air resistance = ______

a)

weight

b)

upthrust

c)

velocity

d)

gravity

20.

What does the law of conservation of energy say?

4 lines
21.

Which of these are a renewable resource?

a)

coal

b)

solar (sun)

c)

oil

d)

wind

22.

Which of these are a non- renewable resource?

a)

coal

b)

fossil fuel

c)

geothermal

d)

water

23.

A man uses 419 J of work in removing a nail from a piece of wood with a hammer. The hammer has a work output of 305 J. What is the efficiency of the hammer?

a)

1.37 %

b)

72.8%

c)

0.72 %

d)

137.4 %

24.

Speed is ______

d= distance, t= time

a)

d x t

b)

d/t

c)

t/d

d)

(d/t) t

25.

Speed is a _____

a)

vector quantity

b)

scalar quantity

26.

Force is a _______.

a)

vector quantity

b)

scalar quantity

27.

vector quantity has ______.

a)

size and direction

b)

speed only

c)

size only

d)

direction only

28.

convert 50 km/h to m/s.

1 km =1000 meters (m)

1 hour = 3600 seconds (s)

a)

180.4 m/s

b)

13.9 m/s

c)

15.4 m/s

d)

20.1 m/s

29.

A car travels 3 hours. It travels 30 miles in the first hour, 45 miles in the second hour and 75 miles in the third hour. What is the average speed?

a)

25 miles/ hour

b)

46 miles/ hour

c)

65 miles/ hour

d)

34 miles/ hour

30.

When did the toy car stop?

a)

A to B

b)

C to D

c)

B to C

d)

D to E

31.

What is happening from A to B?

a)

constant speed

b)

stopped

c)

constant acceleration

d)

Deceleration

32.

Which speed is the greatest?

a)

A to B

b)

B to C

c)

D to E

d)

C to D

33.

Calculate how long Samina took to complete the last part of her ride.

a)

4 hours

b)

6 hours

c)

24 hours

d)

2 hours

34.

A gradient DOES NOT measure

a)

steepness

b)

distance

c)

speed

d)

Rate of traveling

35.

Which of the following is equation for gradient?

a)

vertical change/ horizontal change

b)

Horizontal change/ vertical change

c)

Horizontal change x vertical change

36.

What time is Samina slowing down?

a)

1.25 hour

b)

0.5 hour

c)

1 hour

d)

0.25

37.

What time did Samina slow down?

a)

0 hour

b)

.47 hour

c)

1 hour

d)

0.75 hour

38.

Which energy store is this?

a)

elastic energy

b)

internal energy

c)

kinetic energy

d)

Gravitational potential energy

39.

This is an example of what kind of stored energy?

a)

elastic energy

b)

Gravitational potential energy

c)

kinetic energy

d)

internal energy

40.

Which stored energy is this?

a)

Gravitational potential energy

b)

kinetic energy

c)

internal energy

d)

elastic energy

41.

What is the efficiency of the LED light?

Efficiency =

useful energy output

_____________

energy input

a)

13%

b)

15%

c)

75%

d)

6 %

42.

How fast is the boat moving relative to the riverbank?

a)

3 m/s

b)

7 m/s

c)

5 m/s

d)

2 m/s

43.

Lever is a type of simple machine that turns around on a

a)

effort

b)

fulcrum

c)

load

d)

resistance

44.
a)

1st

b)

2nd

c)

3rd

45.
a)

1st

b)

2nd

c)

3rd

46.

Turning effect of a force is called a moment.

a)

True

b)

False

47.

What are the units for moments?

a)

M

b)

N m

c)

m

d)

N

48.

This picture shows

a)

Equilibrium

b)

constant state

c)

Fe

d)

Fr

49.

IMA has friction.

a)

True

b)

False

50.

AMA does not have friction.

a)

True

b)

False

51.

Which is % efficiency of a lever?

a)

AMA x IMA

b)

IMA/ AMA

c)

AMA/IMA

52.

Find Fe.

FeDe = FrDr

a)

71.7 N

b)

67.4 N

c)

0.067 N

d)

71.7 m

53.

Find Fe.

FeDe = FrDr

a)

840 N

b)

140 N

c)

140 m

d)

6 N

54.

Find Fr.

FeDe = FrDr

a)

100 N

b)

200 m

c)

200 N

d)

3 m

55.

IMA calculation is

a)

De

_____

Dr

b)

Fr

_____

Fe

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