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Science reviewer for kd

Total questions: 111

Worksheet time: 3hrs 26mins

Name
Class
Date
1.

A force is a _____

a)

push

b)

pull

c)

Both push and pull

d)

Object

2.

When we throw anything in air it always falls down because of _____

a)

Friction

b)

Gravity

c)

Solid

d)

motion

3.

If negative charge is developed on two objects they will__

a)

attract each other

b)

repel each other

4.

Which force acts backwards and prevent us form slipping on a wet floor?

a)

Gravitational force

b)

Magnetic force

c)

Frictional force

d)

Electrostatic force

5.

When you rub your hand heat energy is generated because of _____

a)

Magnetism

b)

Muscular force

c)

Electrostatic force

d)

Friction

6.

What force ultimately slows the roller coaster to a stop?

a)

Applied

b)

Normal

c)

Friction

d)

Gravitational

7.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
8.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
9.

A force can____________.

a)

make an object move

b)

make a moving object stop moving

c)

slow an object down

d)

all of the above

10.

True or false: An object resting on the ground can move without force.

a)

True

b)

False

11.

When you push or pull something, you are creating_________________.

a)

weight

b)

a speed

c)

a force

d)

a surface

12.

Which of the following would it take the most force to move?

a)

a 3-pound ball

b)

a 5 pound ball

c)

a 15 pund ball

d)

a 25 pound ball

13.

Imagine you kick four balls with the same amount of force. Which one will go the farthest?

a)

a 3 pound ball

b)

a 5 pound ball

c)

a 15 pound ball

d)

a 25 pound ball

14.

Which of the following requires forces to move?

a)

a book

b)

a rock

c)

an elephant

d)

all of the above

15.

What does the force of gravity do to objects?

a)

It makes them float

b)

it makes them jump

c)

it pulls them to the center of earth

d)

it pushes them apart

16.

How does gravity on Earth compare to gravity on the moon?

a)

It is the same

b)

There is more gravity on Earth

c)

There is more gravity on the moon

17.

What does the word mass mean?

a)

The amount of matter in an object

b)

the speed an object falls

c)

how high a person can jump

d)

how far an object can be thrown

18.

Objects that have more mass also have more gravity.

a)

True

b)

False

19.

An example of the force of gravity is-

a)

a rocket flying through space

b)

a ball falling to the ground after it has been thrown

c)

a cloud moving across the sky

d)

the Sun rising

20.

What is position?

a)

The movement of an object.

b)

The location of an object.

21.

What is motion?

a)

A change in position.

b)

A change in force.

22.

When your position changes, you're in ____________.

a)

motion

b)

force

23.

A push moves things _______ .

a)

Close to you

b)

Away from you

24.

A pull moves things _______ .

a)

Close to you

b)

Away from you

25.

When you pick things up, you're _______.

a)

pushing

b)

pulling

26.

Which requires more force to move it?

a)

A heavy object, like a bowling ball.

b)

A light object, like a tennis ball

27.

Friction is a force that ______ against an object to slow its motion.

a)

pushes

b)

pulls

28.

According to your reading, forces move things.

a)

TRUE

b)

FALSE

29.

Which force pulls objects towards the center of the earth?

a)

Gravity

b)

Friction

30.

Which force also produces heat?

a)

Gravity

b)

Friction

31.

Forces can be applied in different directions.

a)

TRUE

b)

FALSE

32.

An object moves in the _________ direction a force is applied.

a)

SAME

b)

OPPOSITE

33.

What happens when you PUSH a ball?

a)

It moves away

b)

It moves closer

34.

What happens when you PULL a ball?

a)

It moves away

b)

It moves closer

35.
The top layer of soil is called ________.
a)
bedrock
b)
topsoil
c)
subsoil
d)
grass
36.
This is found in the topsoil and is made of decaying plants and animals. 
a)
dirt
b)
water
c)
humus
d)
subsoil
37.
This type of soil is sticky when wet and hard when dry. 
a)
clay
b)
silt
c)
sand
d)
gravel
38.
This type of soil is best for plant growth. 
a)
rock
b)
sand
c)
loam
d)
clay
39.
This type of soil is made of tiny pieces of rock. 
a)
sand
b)
clay
c)
humus
d)
loam
40.
This type of soil is carried by water and left as sediment. 
a)
bedrock
b)
loam
c)
silt
d)
clay
41.
The four types of soil are _____. 
a)
humus, gravel, pebbles, sand
b)
sand, silt, clay, loam
c)
sand, rock, pebbles, granite
d)
sand, clay, bedrock, topsoil
42.
What physical property of soil determines if it retains water?
a)
color
b)
particle size
c)
texture
d)
weight
43.
No water stays in this when poured through. 
a)
loam
b)
clay
c)
gravel
d)
topsoil
44.
Loam is a mixture of clay, silt, and sand. 
a)
True
b)
False
45.
It is important for soil to retain water to 
a)
withstand weathering
b)
erode more slowly
c)
help plants to grow
d)
keep it from being dry
46.
What is the best soil to grow plants in?
a)
sand
b)
silt
c)
loam
d)
clay
47.
If soil particles are large, then 
a)
more water is retained
b)
less water is retained
48.
If a farmer grows more plants in a field, it can be due to having
a)
a soil type that drains well
b)
a soil type that doesn't drain well
49.
How do you determine the texture of soil?
a)
use a spring scale
b)
observe color of particles
c)
rub particles between fingers
d)
taste particles
50.

Which of the following is not a type of soil?

a)

minerals

b)

clay

c)

topsoil

d)

sand

51.

Weathering is......

a)

rocks, grass, and mud.

b)

the breakdown of rocks into smaller pieces

c)

the breakdown of wind, rain, and friction

d)

the weather outside

52.

The organic matter in soil is....

a)

humus

b)

bits of rock

c)

minerals

d)

all of the above

53.

The four main ingredients of soil are....

a)

wind, water, ice, and humus

b)

water, air, rocks, and humus

c)

worms, ice, rocks, and air

d)

water, air, rocks, and worms

54.

Decomposition is......

a)

nature's way of recycling.

b)

the breaking down of once living plants and animals.

c)

decaying

d)

all of the above

55.

What soil is best for growing plants?

a)

clay

b)

sand

c)

mud

d)

topsoil

56.

All of the following processes help form topsoil except...

a)

movement of oceans

b)

decay of plants

c)

weathering of rocks

d)

decomposition of animals

57.

Soil is only dirt.

a)

true

b)

false

58.

Depending on how soil is formed, it's color can be....

a)

yellow

b)

red

c)

black

d)

all of the above

59.

The main causes of weathering are all of the following except...

a)

sun

b)

water

c)

ice

d)

wind

60.
Which of the following is NOT one of the three types of soil?
a)
clay
b)
sand
c)
silt
d)
mud
61.
_______ is the type of soil used most often with plants and on farms. It is a mixture of clay, sand, and silt.
a)
loam
b)
humus
c)
soil
d)
dirt
62.
Are there minerals in soil?
a)
Yes
b)
No
63.
Ellen grabs a topsoil sample in her hand. She rolls it into a ball. The soil feels gritty and the ball falls apart. What part of the topsoil most likely made the topsoil feel gritty?
a)
clay
b)
sand
c)
silt
d)
humus
64.
When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?
a)
sand
b)
silt
c)
clay
d)
humus
65.
Which of the following is the largest particle in soil?
a)
sand
b)
silt
c)
humus
d)
clay
66.
You dig a small hole in the soil and the next day it rains. The hole fills with water, but does not empty even after several days of dry weather. What is the soil mostly made of?
a)
clay
b)
sand
c)
humus
d)
silt
67.
Which of the following best describes soil erosion?
a)
A.  the breakdown of soil 
b)
A.  the improvement of soil
c)
A.  the addition of soil
d)
A.  the movement of soil by wind or water
68.
Which type of soil can hold the greatest amount of water?
a)
sand
b)
silt
c)
clay
d)
loam
69.
Many plants cannot grow in sandy soil. Why is this true?
a)
Sandy soil does not hold enough water.
b)
Air cannot pass through sandy soil.
c)
Roots cannot easily push through sandy soil.
d)
Sandy soil has too many nutrients.
70.
Wind blowing dirt and sand through the air is an example of...
a)
weathering 
b)
erosion
71.
Water gets into the cracks of rock and freezes, causing the rock to break.  What is this an example of?
a)
erosion
b)
weathering
72.
Soil is made of
a)
weathered rocks and minerals
b)
dead plants and animals
c)
air and water
d)
all of the above
73.
How can you tell the difference between two minerals?
a)
By their streak test and hardness
b)
By their color only
c)
By their grain size
d)
By where they were found
74.
What type of rock melts, cools, and hardens?
a)
Sedimentary
b)
Metamorphic
c)
Igneous
d)
Volcano rock
75.
Light is predictable because it will always travel in a _________ line.
a)
Curvy
b)
Straight
c)
Backwards
d)
Crazy
76.
What types of matter can light travel through?
a)
Some solids, liquids, gases and all empty space (vacuum)
b)
All solids, liquids, gases, and empty space (vacuum)
c)
Some solids, liquids, and gases
d)
Only empty space (vacuum)
77.
What does light do when it hits a smooth, flat surface?
a)
Reflect
b)
Refract
c)
Absorb
d)
Diffuse
78.
What does light do when it hits an object that it cannot pass through?
a)
It creates a shadow
b)
It passes through anyway
79.
If light passes through two different types of matter, it will do what?
a)
Reflect
b)
Refract
c)
Absorb
d)
Diffuse
80.
Why does the pencil look broken?
a)
Light is refracting
b)
Light is reflecting
c)
Light is absorbing
d)
Light is diffusing
81.
What is light doing off this mirror?
a)
Reflecting
b)
Refracting
c)
Absorbing
d)
Scattering
82.

What does reflection mean?

a)

It is when the light changes the material and the direction of it changes as well.

b)

It is when the material is rebounding the light.

83.
Which explains why the fork looks different under water?
a)
light can't pass through the glass
b)
the wavelength of light lengthens
c)
the amount of light increases when going through water
d)
light is refracted at an angle
84.
The color you see is the color that is ___.
a)
reflected
b)
absorbed
85.
___________ is a from of energy that we can see with our eyes.
a)
shadow
b)
light
c)
energy
d)
reflection 
86.
White light is made up of _________________ colors.
a)
10
b)
3
c)
7
d)
70
87.
Transfer of energy when a wave disappears into a surface
a)
Transparent
b)
Refraction
c)
Reflection
d)
Absorption
88.
Allows most light through
a)
eflection
b)
Refraction
c)
Translucent
d)
Transparent
89.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
90.
Opaque means...
a)
No light passes through it
b)
All light passes through it
c)
Some light passes through it
91.

ROY G BIV stands for....

a)

Red, Orange, Yellow, Green, Blue, Indigo, and Violet

b)

Red, Orange, Yellow, Gray, Black, Ivory and Violet Blue

c)

Red, Orange, Yankee Blue, Green, Black and Violet

d)

Royal Blue, Orange, Yellow, Green, Blue, Indigo and Violet

92.

Sound travels fastest in...

a)

solids

b)

liquids

c)

gases

d)

air

93.
Sound is a form of? 
a)
energy
b)
pitch
c)
volume
94.
An object that does not vibrate cannot produce
a)
sound
b)
light
c)
heat
d)
electricity
95.

A place where no sound exists is...

a)

in the air

b)

under water

c)

space

d)

all of the above

96.
__________ means to move back and forth quickly.
a)
Pitch
b)
Amplitude
c)
Vibration
d)
Echo
97.
Sound is a form of energy produced by ______________.
a)
vibrations
b)
distances
c)
prisms
d)
Ms. Crews
98.
Sound waves travel the SLOWEST through _____________.
a)
gases
b)
solids
c)
liquids
99.
The volume of a sound is measured in units called ________
a)
decibels
b)
liters
c)
sound waves
d)
inches per minute
100.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
101.
Sound does not travel in space because
a)
Space is too far away.
b)
There is no matter in space.
c)
Space is the final frontier
d)
Space has planets.
102.
You stand outside a room that has the doors and windows closed. Why can you still hear sounds made inside the room?
a)
Vibrations are absorbed in the doors and windows
b)
Vibrations are reflected inside the room
c)
Vibrations travel through the door and the window
d)
Vibrations echo in the room
103.
Why do we see lightning before we hear the thunder?
a)
Our eyes trick us
b)
Light travels faster than sound
c)
they're two separate things
104.

Which of these is NOT a medium?

a)

light

b)

air

c)

wood

d)

metal

105.

Which sentence BEST describes how sound moves?

a)

Sound can move through solids, liquids, or gases.

b)

Sound can move through empty space or through matter.

c)

Sound can move through solids and liquids but not through gases.

d)

Sound can move through liquids and gases but not through solids.

106.

How can I produce a sound?

a)

heating an object

b)

hitting an object

c)

moving the mouth

d)

looking an object

107.
Which of the following is an example of sound traveling through a solid?
a)
When you hear people in another room
b)
When you hear things underwater
c)
When you are talking to the person next to you
d)
Sound cannot travel through solids
108.

When people speak their ________ vibrate.

a)

ear drums

b)

vocal chords

c)

ears

d)

tongue

109.

Sarah and Maria made a telephone using two cans and a string. It was a very long string. Maria went upstairs in her house and Sarah stayed downstairs. Maria spoke softly into the can. "I can hear you!' Sarah said back. How can this happen?

a)

Sound waves travel through a vacuum.

b)

Sound waves travel from high to low.

c)

Sound waves travel through solids like the string.

d)

Maria talked so loudly that Sarah could hear her without the phone.

110.

Will a homemade telephone made of two cans and a string work better with a tightly-woven string or a loosely-woven string?

a)

a tightly woven string because it will not come apart as easily

b)

a loosely woven string because the sound waves have more room to move

c)

a tightly woven string because sound waves travel best through dense materials

d)

a loosely woven string because sound waves travel best through less dense materials

111.

Sound travels faster in objects that have a greater.....

a)

Mass

b)

Density

c)

Volume

d)

Yards

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