Quiz about 8th Grade Science Midterm Review

Question 1

A hypothesis is often tested with a controlled _______

Accepted Answer

experiment

Answer

observation

Answer

theory

Answer

law

Question 2

A pattern or event in nature that is always true is what

Accepted Answer

scientific law

Answer

scientific theory

Answer

hypothesis

Answer

controlled experiment

Question 3

A possible explanation to a problem, that can be tested is what

Accepted Answer

hypothesis

Answer

observation

Answer

prediction

Answer

experiment

Question 4

The time it takes to run a mile depends on the persons running speed. Name a constant variable.

Accepted Answer

Same track, same stop watch used, same people performing the experiment.

Answer

The persons running speed

Answer

Same running speed and same track

Answer

The time it takes to run a mile

Question 5

The height of the bean plant depends on how much water they receive. What is the dependent variable?

Accepted Answer

The height of the bean plant

Answer

Same amount of sunlight

Answer

Same soil and water

Answer

How much water they received

Question 6

Why is it important to perform multiple trials during an experiment?

Accepted Answer

It makes sure your results are more accurate

Answer

It fixes errors from the experiment

Answer

It allows you to keep track of your materials

Answer

It is not important to have multiple trials

Question 7

A__________ is a statement that can be tested, either by experiment or observation. It is sometimes written in an "if_then" format.

Accepted Answer

Hypothesis

Answer

Independent Variable

Answer

Testable Question

Answer

Theory

Question 8

In science, a dominant explanation supported by a very large amount of evidence is called a...

Accepted Answer

Theory

Answer

Hypothesis

Answer

Research question

Answer

Testable question

Question 9

What is happening to the temperature in New York City?

Accepted Answer

It is mostly increasing.

Answer

It is remaining about the same.

Answer

It is mostly decreasing.

Answer

There is a pattern of increasing and decreasing.

Question 10

The number of apples in this basket is ______________________ data?

Accepted Answer

quantitative

Answer

qualitative

Answer

independent

Answer

dependent

Question 11

The dependent variable in this experiment is -

Accepted Answer

Number of Bacteria

Answer

Time of Incubation

Answer

Culture Number

Answer

Type of Bacteria

Question 12

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 13

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

Question 14

What is the tool you would use to measure the mass of an apple?

Accepted Answer

Triple Beam Balance

Answer

Metric ruler

Answer

Scale

Answer

Graduated Cylinder

Question 15

Data that is observed using your 5 senses and is described through the use of WORDS is...

Accepted Answer

Qualitative Data

Answer

Quantitative Data

Question 16

Which of the following hypotheses is written correctly?

Accepted Answer

If a tennis ball is frozen, then it won't bounce as high as one that is not frozen.

Answer

Frozen tennis balls will not bounce as high.

Answer

If I heat up a tennis ball it will bounce high.

Answer

If I freeze a tennis ball, then it will not bounce as high.

Question 17

Imagine that a scientist suggests that the size of an insect population depends on the temperature. What observations must this scientists make in order to collect evidence to support his or her theory or idea?

Accepted Answer

The scientist must observe the insect population throughout the year.

Answer

The scientist must observe the insect population only in summer.

Answer

The scientist must observe the insect population in the lab.

Answer

The scientist must observe the insect population in different areas.

Question 18

Scientist communicate their results by publishing their work.  Why is it important for scientist do this?

Accepted Answer

to learn from each other

Answer

to keep their work secret

Answer

to compete with other scientist

Answer

so the experiment are not repeated

Question 19

Scientist usually write reports about their investigations.  Why do they do this?

Accepted Answer

to communicate their work to other scientists

Answer

to classify results

Answer

to ask questions

Answer

to perform experimental trials

Question 20

What part of the moon do we see from Earth?

Accepted Answer

the same side

Answer

all of it

Answer

none of it

Answer

only one quarter

Question 21

The moon seems to change shape from day to day in a cycle that lasts about a month as it goes through _.

Accepted Answer

phases

Answer

revolutions

Answer

rotations

Answer

eclipses

Question 22

As the moon's shape appears to get smaller, we say that the moon is _.

Accepted Answer

waning

Answer

swelling

Answer

waxing

Answer

disappearing

Question 23

About how long does it take the moon to make one complete cycle around the earth?

Accepted Answer

28 days

Answer

65 days

Answer

8 days

Answer

365 days

Question 24

Which moon phase is when you can't see the moon at all?

Accepted Answer

New moon

Answer

Waning crescent

Answer

Full moon

Answer

Waxing gibbous

Question 25

Phases of the moon in which the moon appears to be getting larger are referred to as _.

Accepted Answer

waxing

Answer

waning

Answer

new

Answer

eclipse

Question 26

The cycle of the moon lasts about a _.

Accepted Answer

month

Answer

day

Answer

year

Answer

week

Question 27

During the phases of the Moon, the Moon appears to change shape.  This change in appearance is due to the Moon...

Accepted Answer

reflecting a different amount of light due to alignment with Earth and the Sun.

Answer

physically changing size and shape.

Answer

moving closer and then farther away from Earth.

Answer

having craters on its surface.

Question 28

One complete revolution of the Earth around the sun takes about

Accepted Answer

one year

Answer

one rotation

Answer

half a year

Answer

one season

Question 29

The Earth takes about __________________ hours to complete one rotation of its axis.

Accepted Answer

24

Answer

12

Answer

14

Answer

28

Question 30

At all times the moon is half lit up by the sun.

Accepted Answer

true

Answer

false

Question 31

The spinning of an object on its axis is called______

Accepted Answer

rotation

Answer

orbit

Answer

revolution

Answer

tide

Question 32

Day and night is caused by the _____________ of earth on its axis.

Accepted Answer

rotation

Answer

revolution

Answer

orbit

Question 33

A body that orbits a planet is a...

Accepted Answer

Satellite

Answer

Meteor

Answer

Asteroid

Answer

Comet

Question 34

A ______ eclipse occurs when the moon passes between Earth and the sun, blocking the sunlight from reaching Earth. The moon's shadow then hits Earth.

Accepted Answer

solar eclipse

Answer

lunar eclipse

Answer

vernal equinox

Answer

autumnal equinox

Question 35

What does "geo-" mean?

Accepted Answer

Earth

Answer

sun

Answer

Center

Question 36

Why did people believe in the Geocentric vs the Heliocentric solar system?

Accepted Answer

all of these answers are correct.

Answer

Geocentric system had been around for a LONG time.

Answer

People don't like change.

Answer

There wasn't enough proof  to support the Heliocentric system.

Question 37

This image shows the:

Accepted Answer

Geocentric Solar System

Answer

Heliocentric Solar System

Question 38

What model does this represent?

Accepted Answer

Heliocentric

Answer

Geocentric

Question 39

What does "helios" mean?

Accepted Answer

sun

Answer

Earth

Answer

center of

Answer

moon

Question 40

What is in the center of the Heliocentric Model?

Accepted Answer

Sun

Answer

Comet

Answer

Jupiter

Answer

Earth

Question 41

Sun Centered

Accepted Answer

Heliocentric

Answer

Geocentric

Answer

Aphelion

Answer

Perihelion

Question 42

A force of attraction between objects that is due to their masses.

Accepted Answer

Gravity

Answer

Solar Flare

Answer

Orbit

Answer

Centripetal Force

Question 43

The sun and all of the planets and other bodies that travel around it.

Accepted Answer

Solar System

Answer

Geocentric

Answer

Centripetal Force

Answer

Sunspot

Question 44

What is gravity?

Accepted Answer

a force of attraction between objects that is due to their masses

Answer

an unbalanced force that makes objects move in an elliptical path

Answer

the rotating cloud of gas and dust from which the sun and planets formed

Answer

the point in the orbit of a planet at which the planet is farthest from the sun

Question 45

The process by which two or more low-mass atomic nuclei fuse to form another, heaver nucleus is called_______.

Accepted Answer

Nuclear Fusion

Answer

Sunspot

Answer

Prominence

Answer

Core

Question 46

A ___________ is a dark area on the surface of the sun that is cooler than the surrounding areas.

Accepted Answer

Sunspot

Answer

Nuclear Fusion

Answer

Prominence

Answer

Photosphere

Question 47

What is the layer of the sun in which energy is produced?

Accepted Answer

Core

Answer

Radiative Zone

Answer

Convective Zone

Answer

Photosphere

Question 48

What is the layer of the sun from which energy escapes from space?

Accepted Answer

photoshpere

Answer

chromosphere

Answer

corona

Answer

core

Question 49

What is the layer of the sun through which energy is transferred away from the core by radiation?

Accepted Answer

Radiative Zone

Answer

Convective Zone

Answer

Photosphere

Answer

Core

Question 50

How is energy transported from the core to the surface of the sun by radiation and by convention.

Accepted Answer

Radiation:Light particles bounce towards the convective zone. Convention: Hotter gases rise to the sun's surface, and then cooled and sink. This is a circular pattern.

Answer

Radiation:Hotter gases rise to the sun's surface, and then cooled and sink. This is a circular pattern. Convention: Light particles bounce towards the convective zone

Answer

The sun does not use radiation and convention. This is a trick question.

Question 51

What is the name of the galaxy in which we live?

Accepted Answer

Milky Way

Answer

Earth

Answer

Andromeda

Answer

Solar System

Question 52

What type of galaxy is the Milky Way?

Accepted Answer

Spiral galaxy

Answer

Elliptical galaxy

Answer

Irregular galaxy

Question 53

Place these objects in order from smallest to largest:

Accepted Answer

Planets, solar system, galaxy, universe

Answer

Planets, solar system, universe, galaxy

Answer

Solar system, planets, galaxy, universe

Answer

Galaxy, solar system, planets, universe

Question 54

What is the name of the only star in our solar system?

Accepted Answer

The sun

Answer

Polaris

Answer

Alpha Centauri A

Answer

Sirius

Question 55

A Galaxy is a collection of stars, gas, and dust bound together by Gravity.

Accepted Answer

True

Answer

False

Answer

Don't Know

Answer

Pop songs rock

Question 56

__________________ is a huge collection of stars

Accepted Answer

Galaxy

Answer

Universe

Answer

Carma

Answer

Solar System

Question 57

Place these objects in order from smallest to largest:

Accepted Answer

Planets, solar system, galaxy, universe

Answer

Planets, solar system, universe, galaxy

Answer

Solar system, planets, galaxy, universe

Answer

Galaxy, solar system, planets, universe

Question 58

What is weight?

Accepted Answer

Weight is the gravitational pull on an object

Answer

Weight is the amount of material in an object?

Answer

Weight is the physical dimensions of an object?

Answer

Weight is the volume of an object

Question 59

How would the force of gravity between Earth and its moon be affected if the mass of the moon were less?

Accepted Answer

The force of gravity would be less.

Answer

The force of gravity would be unchanged.

Answer

The force of gravity would be greater.

Answer

The would be no force of gravity.

Question 60

If Saturn has more mass than Earth, how would this affect your weight on Saturn?

Accepted Answer

I will weigh more on Saturn

Answer

I will weigh less on Saturn

Answer

My weight will stay the same

Answer

I will have no weight at all

Question 61

Which day of the year has the least amount of daylight?

Accepted Answer

Winter Solstice

Answer

Summer Solstice

Answer

Autumnal Equinox

Answer

Vernal Equinox

Question 62

When there is Equal hours of day and night, the Season is ______________.

Accepted Answer

Spring or Fall

Answer

Winter

Answer

Summer

Answer

Hunting Season

Question 63

The Earth's axis is angled at _______ degrees.

Accepted Answer

23.5

Answer

180

Answer

90

Answer

45

Question 64

Two factors effecting the strength of the force of gravity between 2 objects are...

Accepted Answer

mass and distance

Answer

mass and matter

Answer

distance and weight

Answer

weight and mass

8th Grade Science Midterm Review

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