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2024 6th Grade science Review #2

Total questions: 79

Worksheet time: 2hrs 35mins

Name
Class
Date
1.

What is a warm front

a)

a front where a warm air mass is caught between two colder air masses and brings cool temperatures and large amounts of rain and snow

b)

front when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow)

c)

a front where warm air moves over cold air and brings drizzly rain and then are followed by warm and clear weather

d)

a boundary that separates a moist air mass from a dry air mass

2.

True or False:

an air mass is A huge body of air that has similar temperature, humidity, and air pressure at any given height

a)

True

b)

False

3.

What is a cold front?

a)

front when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow)

b)

The temperature at which condensation begins

c)

very cold, very dry stable air mass

d)

A boundary between air masses that don't move possibly causing rain for several days

4.

What is a stationary Front?

a)

unstable cold, moist air mass that forms over cold oceans--

Winter and Summer- cold and humid

b)

very cold, very dry stable air mass

c)

unstable, warm, dry air mass that forms over land

Winter - warm and dry

Summer - Hot and dry

d)

A boundary between air masses that don't move possibly causing rain for several days

5.

What is an occluded front?

a)

brings cool temperatures

b)

a front where a warm air mass is caught between two colder air masses

c)

Brings clear weather

d)

brings drizzly rain

e)

brings large amounts of rain and snow

6.

What is a front?

a)

A huge body of air that has similar temperature, humidity, and air pressure at any given height

b)

When any two air masses meet. The four major types are cold fronts, warm fronts, stationary fronts, and occluded fronts.

7.

What is an air mass?

a)

When any two air masses meet. The four major types are cold fronts, warm fronts, stationary fronts, and occluded fronts.

b)

A huge body of air that has similar temperature, humidity, and air pressure at any given height

8.

What is a continental polar (cP) air mass?

a)

An air mass that is cold

b)

An air mass that is warm

c)

An air mass that forms over water

d)

An air mass that forms over land

9.

What is a maritime polar (mP) air mass?

a)

unstable cold, moist air mass that forms over cold oceans--

Winter and Summer- cold and humid

b)

Wet and warm air mass

c)

hot and humid air mass that originates from the ocean region straddling the equator.

d)

very cold, very dry stable air mass

10.

What is a maritime tropical (mT) air mass?

a)

dry air mass

b)

Wet and warm air mass that forms over water

c)

unstable, warm, dry air mass that forms unstable, warm, dry air mass that forms over land

Winter - warm and dry

11.

What is a Continental Tropical (cT) air mass?

a)

unstable, warm, dry air mass that forms over land

Winter - warm and dry

Summer - Hot and dry

b)

forms when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow)

c)

An air mass that is cold warm and forms over water

12.

What is the formula for speed?

a)

speed = distance x time

b)

speed=distance / time

c)

speed = time / distance

d)

speed = distance + time

13.

What does the solid line on this graph represent?

a)

Constant speed

b)

Acceleration

c)

At rest

d)

deceleration

14.

What is the line on this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

15.

What is this line of this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

16.
Which graph is showing acceleration (getting faster)
a)
D
b)
E
c)
both D and E
d)
neither D or E
17.
Which graph is showing deceleration (getting slower)
a)
D
b)
E
c)
both D and E
d)
neither D or E
18.
Which graph is showing a faster constant speed?
a)
B
b)
F
c)
They show the same speed
19.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
20.
At 60 seconds, how far had this object traveled? 
a)
0 m
b)
10 m
c)
20 m
d)
40 m
21.
What is the speed this motion?
a)
constant speed
b)
not moving
c)
speed increasing
d)
speed increasing at a constant rate
22.

What happened during A to B point?

a)

not moving

b)

increasing speed at a constant rate

c)

moving at a constant speed

d)

acceleration

23.
What happened during C to D point?
a)
not moving
b)
increasing speed at a constant rate
c)
moving at a constant speed
d)
moving at 0 m/sacceleration
24.
A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?
a)
50 miles
b)
25 miles
c)
100 miles
d)
75 miles
25.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
26.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
27.
Which runner won the race?
a)
A
b)
B
c)
C
28.
Which runner had a head start?
a)
A
b)
B
c)
C
29.
This graph demonstrates an object that is -
a)
Increasing speed away from the start
b)
Moving away from the start at a constant speed
c)
Decreasing speed toward the start
d)
Moving toward the start at a constant speed
30.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
31.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
32.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
33.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
34.
What is the measuring unit for mass?
a)
centimeter 
b)
millimeter 
c)
grams 
d)
pounds
35.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
36.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3
37.
A crayon has a mass of 10g and volume of 5 mL. What is the density?
a)
30 g/mL
b)
15 g/mL
c)
1 g/mL
d)
2 g/mL
38.
What is this tool to get mass?
a)
triple beam balance
b)
ruler
c)
thermometer
d)
graduate cylinder
39.
Frank has an eraser. It has a mass of 4 g, and a volume of 2 cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
40.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
41.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
42.
Mercury is a metal that is liquid at room temperature and has a density of 13.5 g/cm3.  Which of these metals would sink below the mercury if dropped into a container of mercury?
a)
gold (density=19.3 g/cm3)
b)
lead (density=11.4 g/cm3)
c)
iron (density=7.9g/cm3)
d)
aluminum (density=2.7g/cm3)
43.
What is the density of a substance that has a mass of 30g and a volume of 6 liters?
a)
24 g/l
b)
5 g/l
c)
36 g/l
d)
180 g/l
44.
An irregularly shaped piece of gold was lowered into a graduated cylinder holding a volume of water equal to 17 ml. The height of the water rose to 20 ml. If the mass of the gold was 27 g, what was its density?
a)
9 g/mL
b)
10.5 g/mL
c)
6.5 g/mL
d)
8 g/mL
45.
How much water has been displaced in the image shown?
a)
40 mL
b)
65 mL
c)
20 mL
d)
25 mL
46.

An object is is placed into 45 mL of water. The water rises to 48 mL. What is the volume of the object?

a)

3 mL

b)

93mL

c)

8 mL

d)

83 mL

47.

One big continent or land mass.

a)

Grass

b)

Land

c)

Pangea

d)

Epicenter

48.

Is it true that Epicenter means the point on earths surface directly above an earthquakes focus

a)

true

b)

false

49.

Convergent Boundary

a)

A plate Boundary where two plates move away from each other.

b)

A plate boundary where two plates move toward each other.

c)

A region around a magnetic substance.

d)

Earths land based plants.

50.

The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantel at a convergent plate boundary.

a)

Plate Tectonics

b)

Epicenter

c)

Pangea

d)

Subduction

51.

Magnetic Fields

a)

A magnetic substance that keeps Earth together.

b)

The substance that makes magnets.

c)

A region around a magnetic substance.

d)

A magnetic substance that is found in the middle of the Earth.

52.

Developed the Continental Drift Theory.

a)

Alfred Waenger

b)

Geologic Events

c)

Plate Tectonics

d)

Continetal Drift

53.

Continental Plates

a)

Plates.

b)

Earths land based plates.

c)

Ocean based plates.

d)

Sky based plates.

54.

Oceanic Plates

a)

Earths ocean based plates.

b)

Earths land based plates.

c)

Earths sky based plates.

d)

Earths air based plates.

55.

The theory that pieces of Earths lithosphere are in constant motion,driven by convection currents in the mantle.

a)

Plate Tectonics

b)

Epicenter

c)

Pangea

d)

Subduction

56.

Geological Events

a)

Earths land based plates.

b)

One big continent or land mass.

c)

major events in Earths past based on geological time,using the study of the plants rock layer.

d)

Earths ocean based plates.

57.

Continetal Drift

a)

The point on Earths surface directly above an Earthsquakes focus.

b)

One big continent or land mass

c)

The theory that the Earths continents have moved over geologic time.

d)

The region around a magnetic substance

58.

A plate boundary where two plates move away from each other.

a)

Epicenter

b)

Pangea

c)

Convergent Boundary

d)

Divergent Boundary

59.

What are ATOMS made up of

a)

particles

b)

Electron,neutrons,protons

c)

matter

d)

elements

60.

mass

a)

The measure of amount of matter in an object

b)

s an object or type of material that allows the flow of charge in one or more directions.

c)

an object or type of material that allows the flow of charge in one or more directions.

61.

conductor

a)

molecules

b)

a material in which electric current does not flow freely

c)

metal

d)

an object or type of material that allows the flow of charge in one or more directions

62.

density

a)

the amount of matter

b)

protons

c)

compound

d)

mass per unit volume

63.

Thermal

a)

air

b)

heat

c)

compound

64.

compound

a)

groups of molecules that are mixed in a completely even distribution

b)

A molecule that has two or more different elements bonded together

65.

basic Element

a)

Earth

b)

water

c)

fire

d)

air

66.

Mixture

a)

solute

b)

colloid

c)

A substance made by mixing other substances

d)

anything that has mass

67.

magnetism

a)

An invisible force pulls certain substances towards a magnet

b)

ability of matter to allow thermal energy to move threw it

68.

solubility

a)

solution

b)

solvent

c)

ability of matter to dissolve in other substances

69.

How much space an object takes up is called...

a)

Mass

b)

Volume

c)

Density

d)

Weight

70.

What is the process called when a solid turns INTO a liquid?

a)

Sublimation

b)

Freezing

c)

Boiling

d)

Melting

71.

What is the process of a liquid turning into a gas called?

a)

Burning

b)

Melting

c)

Boiling

d)

Freezing

72.

What is it called when a solid turns into a gas, without going through the liquid stage?

a)

Sublimation

b)

Melting

c)

Evaporation

d)

Deposition

73.

How much gravity is pulling on you is called....

a)

Volume

b)

Weight

c)

Mass

d)

Density

74.

How much matter is in a object?

a)

Weight

b)

Mass

c)

Gravity

d)

Volume

75.

The part of an atom with no charge is called...

a)

Electron

b)

Subatomic Particles

c)

Neutron

d)

Proton

76.

The part of an atom with a positive charge...

a)

Proton

b)

Nuetron

c)

Electron

d)

Elements

77.

Which part of the atom has a negative charge?

a)

Neutrons

b)

Protons

c)

Nucleus

d)

Electrons

78.

What is a Nucleus?

a)

Where the Electrons and Protons are.

b)

Where the Protons and Neutrons are.

c)

Where the Neutrons and Protons are.

d)

Where the Electrons and Neutrons are.

79.

What is deposition?

a)

A Solid changing to a Gas

b)

A Gas changing to a Solid.

c)

A Liquid changing into a Solid.

d)

A Solid changing into a liquid.