Quiz about Science Review

Question 1

Sound is caused by?

Accepted Answer

vibrations

Answer

force

Answer

instruments

Question 2

Sound travels FASTEST through which of these materials?

Accepted Answer

Metal

Answer

Air

Answer

Empty space

Answer

Water

Question 3

What is frequency?

Accepted Answer

the number of vibrations per second

Answer

how high or low a sound is

Answer

the loudness or softness of a sound

Answer

the back and forth movement of matter

Question 4

What is volume?

Accepted Answer

the loudness or softness of a sound

Answer

how high or low a sound is

Answer

the number of vibrations per second

Answer

vibrations

Question 5

What medium does sound travel through slowest?

Accepted Answer

gas

Answer

solid

Answer

liquid

Answer

trees

Question 6

High pitches are produced by objects vibrating _______________.

Accepted Answer

quickly

Answer

slowly

Question 7

Sound travels in which direction?

Accepted Answer

all directions

Answer

down

Answer

forward

Answer

up

Question 8

If a sound bounces back it is called ______________.

Accepted Answer

an echo

Answer

frequency

Answer

sound

Answer

pitch

Question 9

Light bounces when it is

Accepted Answer

reflected

Answer

absorbed

Answer

refracted

Question 10

Light bends when it is

Accepted Answer

refracted

Answer

reflected

Answer

absorbed

Question 11

Which images are opaque?

Accepted Answer

A & E

Answer

A & C

Answer

A,C,E, & F

Answer

D, E, & F

Question 12

Which explains why the fork looks different under water?

Accepted Answer

light is refracted at an angle

Answer

light can't pass through the glass

Answer

the wavelength of light lengthens

Answer

the amount of light increases when going through water

Question 13

Which term means to bounce off the surface of something?

Accepted Answer

Reflect

Answer

Refract

Answer

Absorb

Answer

prism

Question 14

Light bounces when it is

Accepted Answer

reflected

Answer

absorbed

Answer

refracted

Question 15

Light bends when it is

Accepted Answer

refracted

Answer

reflected

Answer

absorbed

Question 16

Why is it harder for the boy in Image B to get down the hill?

Accepted Answer

Friction

Answer

Motion

Answer

Work

Answer

Displacement

Question 17

If these boys are pulling with the same amount of force.  What will happen?

Accepted Answer

They will not move at all.

Answer

The boy in blue will win.

Answer

The boy in red will win.

Answer

Both will fall down.

Question 18

Any time the forces are unbalanced, an object will remain at rest. True or false?

Accepted Answer

false

Answer

true

Question 19

What does this graph represent?

Accepted Answer

Not moving

Answer

Constant speed

Answer

Acceleration

Question 20

A baseball is thrown a distance of 50 meters. What is the speed if it takes 2 seconds to cover that distance?

Accepted Answer

25 m/s2

Answer

100 m/s2

Answer

52 m/s2

Answer

100 seconds

Question 21

Speed is equal to

Accepted Answer

Distance/Time

Answer

Time/Distance

Answer

Time x Distance

Answer

Acceleration

Question 22

What is this graph showing?

Accepted Answer

Constant Speed

Answer

Acceleration (speeding up)

Answer

Deceleration (slowing down)

Answer

No motion

Question 23

An object at rest will remain at rest or in the same uniform motion unless acted upon by an unbalanced force: law of inertia.

Accepted Answer

Newton's First Law of Motion

Answer

Newton's Second Law of Motion

Answer

Newton's Third Law of Motion

Question 24

as mass increases, the acceleration has to decrease: the law of acceleration

Accepted Answer

Newton's Second Law of Motion

Answer

Newton's First Law of Motion

Answer

Newton's Third Law of Motion

Question 25

If one object exerts a force on a second object, the second object exerts a force equal in magnitude and opposite in direction on the object body; law of interaction

Accepted Answer

Newton's Third Law of Motion

Answer

Newton's First Law of Motion

Answer

Newton's Second Law of Motion

Question 26

The picture of the position vs. time graph shows an object that is...

Accepted Answer

accelerating/speeding up

Answer

moving at a constant speed

Answer

not moving

Answer

accelerating/slowing down.

Question 27

How is gravity affected by mass?

Accepted Answer

the larger the mass of the object, the greater the gravity

Answer

small objects have no gravity

Answer

gravity is not affected by mass of objects, whether large or small

Question 28

What is the Average Speed?
Distance: 10m
Time: 5s

Accepted Answer

2

Answer

1/2

Answer

50

Answer

100

Question 29

A ball is moving in a certain direction.  What would happen to the ball if a greater force was applied on the ball along its direction of motion?

Accepted Answer

The speed of the ball would increase.

Answer

The speed of the ball would decrease.

Answer

The ball will stop instantly.

Answer

The ball will change direction.

Question 30

A train that travels 100 kilometers in 4 hours is traveling at what average speed? Remember: Speed= distance/time

Accepted Answer

25 km/h

Answer

50 km/h

Answer

100 km/h

Answer

400 km/h

Question 31

If two boxes are pushed with the same amount of total force, and one weighs 1kg and the other weighs 100kg, which one will accelerate faster?

Accepted Answer

1kg box

Answer

100 kg box

Answer

they will accelerate at the same rate

Question 32

Why are decomposers necessary in the food chain?

Accepted Answer

They provide nutrients for plants.

Answer

They photosynthesize.

Answer

They are food for carnivores.

Answer

They prey on herbivores.

Question 33

Which of the following directly use the Sun's energy to produce their own food?

Accepted Answer

producers

Answer

decomposers

Answer

carnivores

Answer

consumers

Question 34

If a population of grizzly bears gradually increases over time, which of the following will most likely occur?

Accepted Answer

The number of prey species will decrease.

Answer

The size of the bear population will continue to increase.

Answer

The bear population in that area will eventually die out.

Answer

The number of prey species will increase.

Question 35

According to the energy pyramid, which of the following will most likely happen to the other organisms if all the harvest mice died?

Accepted Answer

The number of hawks would decrease, and the number of insects would increase.

Answer

The number of hawks would increase, and the number of insects would increase.

Answer

The number of hawks would increase, and the number of insects would decrease.

Answer

There would be no change in the rest of the chain.

Question 36

Which of the following food chains shows the correct energy flow from left to right?

Accepted Answer

grass > rabbit > owl

Answer

rabbit > owl > grass

Answer

owl > rabbit > grass

Answer

grass > owl > rabbit

Question 37

How can the wolf in this picture benefit from plants even if it never eats plants?

Accepted Answer

The rabbit eats the plants, and the wolf eats the rabbit.

Answer

The plants help the rabbit to hide from the wolf.

Answer

The plants make the wolf run slower.

Answer

The rabbit eats the wolf, and the grass decomposes the rabbit.

Question 38

Which of the following is not an adaptation that would help a plant survive in the desert?

Accepted Answer

large leaves to absorb sunlight

Answer

very long root systems

Answer

the ability to store water in stems

Answer

tiny or no leaves

Question 39

Which of these adaptations would help an animal survive a cold winter season?

Accepted Answer

hibernating in a cave

Answer

losing extra fat on the body

Answer

shedding fur

Answer

sweating to release heat

Question 40

People don't eat grasses, but grasses are still important to people.  Relating to the food chain, why are grasses important to people?

Accepted Answer

People eat organisms that eat the grasses.

Answer

Grass surfaces are safer than concrete.

Answer

People use grass surfaces for recreation.

Answer

Grass fields can't hide dangerous animals.

Question 41

According to the food web, if the snail population of this ecosystem increases, which of the following is most likely to occur?

Accepted Answer

The grass population will decrease.

Answer

The grass population will increase.

Answer

The snails will eventually become extinct.

Answer

The grasshopper population will increase at nearly the same rate.

Question 42

What is the relationship between the Sun, plants, and animals in a food web?

Accepted Answer

The Sun provides energy for plants to make their own food, and animals eat plants or other animals.

Answer

The Sun provides energy for both plants and animals to make their own food.

Answer

The Sun provides light so animals can see which plants to eat.

Answer

The Sun provides heat energy for animals to survive, but not plants.

Question 43

Look at the following table and picture.
These teeth most likely belong to a:

Accepted Answer

tiger.

Answer

deer.

Answer

chimpanzee.

Answer

panda bear.

Question 44

Which of the following best explains why many trees in cold environments have short, pointy leaves?

Accepted Answer

Short, pointy leaves do not become weighed down by snow, so the trees' limbs are less likely to break.

Answer

Shorter leaves can better tolerate strong winds and are less likely to blow off trees than large, broad leaves.

Answer

Animals in colder environments are not adapted to eat any other kind of leaf.

Answer

The cold prevents the leaves from growing longer and broader.

Question 45

The spinning of the Earth on its axis that causes night and day.

Accepted Answer

Rotate

Answer

Revolve

Question 46

The imaginary line running through the center of Earth.

Accepted Answer

axis

Answer

moon

Answer

constellation

Answer

orbit

Question 47

What causes Earth's seasons?

Accepted Answer

the tilt of Earth's axis

Answer

Earth's rotation

Answer

the revolution of the Moon

Answer

Earth's distance from the Sun

Question 48

The rotation of Earth on its axis causes the pattern of _____.

Accepted Answer

night and day

Answer

constellations

Answer

Earth's seasons

Answer

the phases of the moon

Question 49

Fixed patterns of stars are called _____.

Accepted Answer

Constellations

Answer

Nebulas

Answer

orbits

Answer

systems

Question 50

How are stars DIFFERENT from planets?

Accepted Answer

Stars do not move.

Answer

Stars are solid and rocky.

Answer

Stars are made of frozen gases.

Answer

Stars revolve around the Sun.

Question 51

It takes Earth _________ to make one complete rotation on its axis.

Accepted Answer

24 hours

Answer

365 days

Answer

28 days

Answer

24 days

Question 52

It takes Earth _____________ to make one revolution or orbit around the Sun.

Accepted Answer

365 days

Answer

365 hours

Answer

28 days

Answer

24 hours

Question 53

It takes about _____________ for the moon to go through all of its phases.

Accepted Answer

28 days

Answer

365 days

Answer

24 hours

Answer

24 days

Question 54

A rocky body that orbits around a planet.

Accepted Answer

moon

Answer

star

Answer

axis

Answer

Sun

Question 55

Which of the following is true?

Accepted Answer

The sun is the center of the solar system

Answer

Earth is the center of the solar system

Answer

The sun orbits the earth

Answer

Gravity exists only on Earth

Question 56

Why do planets orbit the sun (and not float around in space)?

Accepted Answer

the sun's gravity keeps them in place

Answer

the moons are keeping them in place

Answer

They were hit by an asteroid

Answer

they were hit by a comet

Question 57

What is one difference between comets and the Moon?

Accepted Answer

Comets have large orbits around the Sun, while the Moon orbits Earth.

Answer

The Moon has a core of ice, while comet cores are solid rock.

Answer

The Moon reflects light from the Sun, while comets generate their own light.

Answer

The Moon has a large orbit around the Sun, while comets orbit Earth.

Question 58

When the Northern Hemisphere of Earth is Leaning away from the Sun, What season is the Southern Hemisphere experiencing?

Accepted Answer

Summer

Answer

Winter

Answer

Spring

Answer

Fall

Question 59

What season is letter A?

Accepted Answer

Summer

Answer

Winter

Answer

Spring

Answer

Fall

Question 60

In the summer many people enjoy going to the beach. There is a beautiful beach in Argentina, which is located in the Southern Hemisphere. Which diagram shows the position of Earth when it is summer in Argentina?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 61

That this animal has fur is an...

Accepted Answer

observation

Answer

inference

Answer

conclusion

Answer

opinion

Question 62

What can you infer about the temperature for E.coli bacterial growth?

Accepted Answer

E. coli does not grow well at low and high temperatures.

Answer

E coli will continue to grow at very high temperatures.

Answer

E.coli grows best at very low temperatures

Answer

E.coli grows best at very high temperatures.

Question 63

A biology class of 24 students decides to measure the height of each student and then calculate the average height for the class. Which of these is a possible source of error in this activity?

Accepted Answer

The accuracy of making and recording measurements

Answer

The number of males and females in the class

Answer

The difference in the ages of the students in the class

Answer

The total number of students in the class

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