Quiz about 7th Science TCAP Practice

Question 1

In the following concept map, some items are missing.  Which of the following are items that could appear under Matter---Combines---Chemically?  What three answers should be under Matter---Combines---Chemically?

Accepted Answer

Fizzing occurs

Accepted Answer

Color Changes

Accepted Answer

Precipitate forms

Answer

Heterogeneous mixture

Answer

Dissolves

Question 2

At the beginning of the investigation, Carl recorded a total mass of 200g.  After placing seltzer tablets in water, Carl again measured the mass.

If the combined mass of the two seltzer tablets before they were dropped in the water was 5 g, select the total mass at the end of Carl's investigation.

Accepted Answer

205g

Answer

195 g

Answer

197 g

Answer

200g

Question 3

Mandy left a bottle of fizzing hydrogen peroxide on teh counter.  Over the bottle opening, she attached a balloon.  At the beginning of her investigation, the total mass of the bottle, balloon and liquid was 305 g.

The fizzing hydrogen peroxide is an example of a(n)

Accepted Answer

chemical change taking place

Answer

mechanical change taking place

Answer

physical change taking place

Answer

evolutionary change taking place

Question 4

What cell organelle produces energy in plant cells?

Accepted Answer

mitochondria

Answer

vacuole

Answer

lysosome

Answer

ribosome

Question 5

Where are the most reactive metals located?

Accepted Answer

light gray, section A

Answer

dark gray, section B

Answer

black, section C

Answer

textured, section D

Question 6

Which organism shown in the image is a producer?

Accepted Answer

grass

Answer

deer

Answer

buzzard

Answer

All the organisms are producers.

Question 7

What is the name of the organism representing the most concentrated source of energy contained within its tissues?

Accepted Answer

plankton

Answer

shark

Answer

otter

Answer

abalone

Question 8

In class, John made a mixture of sawdust, water and iron filings.  What will complete the series of activities John will best use to separate the items in the mixture?

_____________ --> _________________--> gather sawdust

Accepted Answer

evaporate --> use a magnet

Answer

stir --> filter

Answer

filter --> add water

Answer

pick up --> add vinegar

Question 9

The graph shows a population estimate from 2000-2005.  What most likely occurred between 2003 and 2004?

Accepted Answer

There was a deadly viral outbreak.

Answer

There was an increase in food

Answer

There was a decrease in predators

Answer

There was a population decrease

Question 10

The graph shows the changes of a grass population from 2007-2011.  What do you predict most likely occurred between 2009 and 2010?

Accepted Answer

an increase in grazing animals

Answer

an increase in light availbility

Answer

a decrease in earthworms

Answer

a decrease in insects

Question 11

How does the energy move between the deer, grass and buzzard?

Accepted Answer

The grass traps energy from the sun, and the deer consumes the grass; when the deer dies, the buzzard consumes the deer.

Answer

The deer traps energy from the sun and the deer consumes the grass;when the deer dies, the buzzard consumes the deer.

Answer

The buzzard traps energy from the sun, and the deer consumes the buzzard;when the buzzard dies, the grass consumes the buzzard.

Answer

The grass traps energy from the sun, and the buzzard consumes the grass, when the buzzard dies, the deer consumes the buzzard.

Question 12

An African elephant population has few members and reproduces once every 2-5 years.  How would this elephant population survive in a suddenly changed environment?

Accepted Answer

The elephant population would not adapt quickly to the change.  It could become endangered or extinct.

Answer

The elephant population would adapt quickly to the change and survive.

Answer

The elephant population would not adapt at all to the chnage and would become extinct.

Answer

The elephant population would adapt to the change by reproducing more quickly.

Question 13

The wildfires occurring in California are not only deadly for California are not only deadly for California residents but may also have an effect on other forests around the world due to

Accepted Answer

the emission of CO2 and other greenhouse gases that can damage them.

Answer

California forest fires starting fires in other parts of the world.

Answer

the extinction of Redwood trees in California forests

Answer

the immigration of forest animals to the Amazon Rainforest

Question 14

Scientists have seen a correlation between increased volcanic eruptions and cancers in women over the last 30 years.  What is the most likely reason for this situation?

Accepted Answer

A change in the composition of atmospheric gases due to volcano emissions.

Answer

The threat of lava flows close to villages near volcanoes.

Answer

Human activity near volcanoes

Answer

The movement of plates below the Earth's surface.

Question 15

The image shows an example of a(n) ___________________.

Accepted Answer

food web

Answer

food chain

Answer

energy pyramid

Answer

trophic level

Question 16

Eight Belles, a 2008 Kentucky Derby winning thoroughbred, was produced by _______ thoroughbred parents, which possessed the traits for agility and quickness.

Accepted Answer

selectively breeding

Answer

inbreeding

Answer

co-evolutionizing

Answer

naturally selecting

Question 17

In Hudson Bay, summer has arrived earlier each year since 1981.  As a result, polar bears in that area have fewer offspring and lower survival rates.   The population has a

Accepted Answer

negative growth rate

Answer

positive growth rate

Answer

stable growth rate

Answer

density dependent growth rate

Question 18

In some fruit flies, the allele for having black eyes (B) is dominant to the allele for having red eyes (b). A scientist mated a batch of fruit flies with genotypes as shown in the Punnett Square below. What is the probability of the offspring will be born with red eyes?

Accepted Answer

25%

Answer

0%

Answer

50%

Answer

75%

Answer

100%

Question 19

____________________ occurs when you chew your food and when your stomach moves the food.

Accepted Answer

mechanical movement

Answer

Osmotic movement

Answer

Chemical movement

Answer

homeostatic movement

Question 20

Look at the image.  The arrow in the image represent gases exchanged between plants and animals.Which statement BEST describes the gas exchange illustrated?

Accepted Answer

Animals release carbon dioxide that plants use in photosynthesis

Answer

Animals produce oxygen that plants release

Answer

Plants produce carbon dioxide that animals use to produce oxygen

Answer

Plants release oxygen that animals use to produce chlorophyll

Question 21

The union of gametes, the sperm and an egg, during the life cyucle of the crown jellyfish is best described as

Accepted Answer

sexual reproduction

Answer

asexual reproduction

Answer

genetic inheritance

Answer

genetic engineering

Question 22

Graham places 5 grams of iron filings in each of four containers.  He then adds various other substances to each container.  Use the observations Graham recorded in the following table to choose the container in which a chemical change occurred.

In what container did a chemical reaction occur?

Accepted Answer

Container 1

Answer

Container 2

Answer

Container 3

Answer

Container 4

Question 23

E83 ethanol can be produced from various food products including sugar cane and sugar beets.  What is one unintended consequence of producing E83 ethanol?

Accepted Answer

increase in cost of sugar

Answer

reduce dependence of fossil fuels

Answer

renewable source of energy

Answer

cleaner engines

Question 24

Look at the image.  The illustration shows structures of the human body.  Select three correct answers.  The functions of the structure labeled X are

Accepted Answer

forming blood cells

Accepted Answer

moving the body

Accepted Answer

supporting the body

Answer

transmitting nerve impulses

Answer

helpin the body breathe

Question 25

Look at the diagram.  Select three correct answers.  The function of this organ system are

Accepted Answer

providing nutrients to cells

Accepted Answer

transporting oxygen to cells

Accepted Answer

removing wastes

Answer

producing offspring

Answer

making hormomes

Question 26

Use the image of a portion of the Periodic Table and your scientific knowledge to answer the question.

Which statement is not true about the relationship between oxygen and sulfur?

Accepted Answer

Sulfur and oxygen are found in the same period on the Periodic Table

Answer

Sulfur has half the neutrons of oxygen

Answer

Sulfur and oxygen have similar reactivity

Answer

Sulfur has twice the mass of oxygen

Question 27

Sonya investigates reacting methane gas (CH4) with oxygen (O2).  The chemical equation representing Sonya's reaction is written:  CH4 + 2O2 --> CO2 + 2 H2O

If there were 10 methane molecules on the reactants side but the products remained the same as shown in the equations above, the chemical equation would be

Accepted Answer

balanced

Answer

difficult to react

Answer

unbalanced

Answer

another chemical reaction

Question 28

Sonya investigates reacting methane gas (CH4) with oxygen (O2).  The chemical equation representing Sonya's reaction is written:  CH4 + 2O2 --> CO2 + 2 H2O

Part A:  If there were 10 methane molecules on the reactants side but the products remained the same as shown in the equations above, the chemical equation would be_____.

Which law best supports Sonya's chemical equation and the answer to Part A.

Accepted Answer

Law of the Conservation of Mass

Answer

Newton's Laws of Motion

Answer

Law of Gravity

Answer

Avogadro's Law

Question 29

Look at the pictures below.  Which image represents the phase of matter having both a definite volume and shape?

Accepted Answer

M

Answer

P

Answer

R

Answer

S

Question 30

A sample of water vapor cools and changes from a gas to liquid water.  Select the correct answer.  What happens to the molecules as they changed from a gas to a liquid?

Accepted Answer

The molecules slow down and get closer together.

Answer

The molecules slow down and get farther apart.

Answer

The molecules get faster and increase in size.

Answer

The molecules get faster and closer together.

Question 31

Which substance is an element?

Accepted Answer

Mg

Answer

NaCl

Answer

KBr

Answer

CH4

Question 32

Which substance is a compound?

Accepted Answer

KCl

Answer

Cl

Answer

Na

Answer

Br

Question 33

Goldis a good conductor of electrical energy.  It is often used in circuit boards.  Select the correct answer.  Which other element is likely used in circuit boards?

Accepted Answer

Copper

Answer

Calcium

Answer

Boron

Answer

Barium

Question 34

Mara has a glass beaker of water with a thermometer in it.  She lets it sit on her laboratory bench top for 40 minutes.  At time t=0 minutes, the thermometer reads 17 degrees C.  At time t=40 minutes, the thermometer reads 25 degrees C.  Which statement correctly explains the cause of the temperature increase?

Accepted Answer

The temperature of the water increased because the surrounding air transferred thermal energy to the water.

Answer

The temperature of the water increased because it transferred energy to the surround air.

Answer

The temperature of the water increased because the thermal energy of the water and air were equivalent.

Answer

The temperature of the water increased because glass is a thermal insulator.

Question 35

The table below shows the chemical and physical properties of several materials.

Which of the following materials is most similar to the materials in the table?

Accepted Answer

argon (Ar)

Answer

iron (Fe)

Answer

Silver (Ag)

Answer

Calcium (Ca)

Question 36

On scratch paper, draw the Punnett Square to predict the cross of a homozygous striped parent with a homozygous solid parent if striped is dominant over solid.

The phenotypes of the offspring will be

Accepted Answer

all striped

Answer

all solid

Answer

some striped and some solid

Answer

neither striped or solid

Question 37

What is the the percentage of offspring that would be solid in the following scenario?

The Punnett Square to predict the cross of a homozygous striped parent with a homozygous solid parent if striped is dominant over solid.

Accepted Answer

100%

Answer

25%

Answer

50%

Answer

75%

Question 38

What piece is missing from the chemical equation for cellular respiration?

Accepted Answer

6O2

Answer

6H2

Answer

6C2

Answer

6Cl2

Question 39

How did the Galapagos finches change to fit the new environment?

Accepted Answer

Over many generations, the finches with beak shapes suited to their environment and food source survived.

Answer

All the finches in the population grew new and different beak shapes.

Answer

The finches chose to only produce offspring that looked different from themselves.

Answer

The finches did not change to fit the new environment.

Question 40

Which has the following characteristics: metabolism, reproduction, homeostasis, growth, made of cells, adaptation and sensitivity?

Accepted Answer

A

Answer

B

Question 41

Jason needs to breathe.  Without the organs in the image above, it would be impossible to do so.  Which three parts of the diagram are labeled correctly?

Select the correct answers.  What part of the diagram is labeled W?

Accepted Answer

aveolus

Answer

lungs

Answer

trachea

Answer

diagram

Question 42

Look at the image of the X-ray.  Dr. Ware took an X-ray of a part of Randy's body.  which system is Dr. Ware examining in the X-ray?

Accepted Answer

skeletal system

Answer

digestive system

Answer

immune system

Answer

nervous system

Question 43

The Asian walking catfish is positioned in the secondary level and the tertiary level because it is a(n)

Accepted Answer

omnivore

Answer

fish

Answer

carnivore

Answer

herbivore

Question 44

Two of the chemical equations represent chemical reactions involving the flow of energy through organisms.  Which two equations represent flow through organisms?

Accepted Answer

A

Accepted Answer

C

Answer

B

Answer

D

Question 45

Consider the reactions cellular respiration and photosynthesis.  Which statement is NOT true concerning those reactions?

Accepted Answer

Molecular oxygen is a reactant in photosynthesis and is a product of cellular respiration.

Answer

Photosynthesis converts solar energy into chemical energy.

Answer

Sugar is a product of photosynthesis and a reactant in respiration.

Answer

Photosynthesis is an endothermic reaction, and respiration is an exothermic reaction.

Question 46

In some fruit flies, the allele for having black eyes (B) is dominant to the allele for having red eyes (b).  A scientist mated a batch of heterozygous fruit flies.  Using the Punnett Squares which square would represent what the next generation would look like.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 47

In some fruit flies, the allele for having black eyes (B) is dominant to the allele for having red eyes (b).  A scientist mated a batch of heterozygous fruit flies.

According to the Punnett Squares below, ______ is the probability that the offspring will have red eyes.

Accepted Answer

25%

Answer

50%

Answer

75%

Answer

100%

Question 48

Leo's class studied the process of photosynthesis.  Leo became interested in how altering light levels would affect plant growth.  His teacher encouraged him to develop an investigation.

Which description below could describe an investigation to determine how light affects plant growth?

Accepted Answer

All of the above

Answer

Grow bean seedlings in a drawer and on a window sill.

Answer

Grow tomato seedlings in a greenhouse and in the garden.

Answer

Grow radish seedlings in a cabinet and in a closet.

Question 49

Pitcher plant are plants that are commonly found growing in boggy, swamp-like conditions.  The soils in swamps often lack many nutrients.  A pitcher plant uses modified leaves to capture and digest insects.  Insects are an additional source of nitrogen, phosphorous, and carbon.  What type of adaptation are the modified leaves?

Accepted Answer

physical

Answer

chemical

Answer

learned

Answer

innate

Question 50

Select the correct answer.  Which organism is not a consumer in this food web?

Accepted Answer

lichen

Answer

grizzly bear

Answer

wolf

Answer

caribou

Question 51

Which is the correct picture that represents a population?

Accepted Answer

S

Answer

M

Answer

P

Answer

R

Question 52

A group of student investigated how temperature affects the rate of chemical reactions.  They used hydrogen peroxide, which breaks down into oxygen and water, for the investigation.  The students measured how long it too to obtain 50 mL of oxygen gas from a given volume of hydrogen peroxide heated to different temperatures.  Examine their data shown in the table below.

Based on the students' data, select the correct conclusion about the rate of this chemical reaction.

Accepted Answer

Reaction rates increase as temperature increases.

Answer

Reaction rates increase as time increases.

Answer

Reaction rates decrease as time decreases.

Answer

Reaction rates decrease as temperature increases

Question 53

Which substance is best classified as a compound?

Accepted Answer

H2O

Answer

N2

Answer

O2

Answer

Al

Question 54

Determine the number of neutrons that most copper atoms contain.

Accepted Answer

35

Answer

29

Answer

64

Answer

128

Question 55

Which answer choice best describes the reactivity of the elements shown?

Accepted Answer

highly reactive

Answer

moderately reactive

Answer

slightly reactive

Answer

inert

Question 56

Which statement is not true about the relationship between nitrogen and phosphorus?

Accepted Answer

Phosphorus and nitrogen are found in the same period on the Periodic Table.

Answer

Phosphorus has twice the neutrons of nitrogen.

Answer

Phosphorus and nitrogen have similar reactivity.

Answer

Phosphorus has twice the mass of nitrogen.

Question 57

Look at the image below. Which answer represents the atomic mass?

Accepted Answer

28.09

Answer

14

Answer

Si

Answer

Silicon

Question 58

What is the group of least reactive elements called?

Accepted Answer

noble gases

Answer

halogens

Answer

semiconductors

Answer

metals

Question 59

Look at the image below. Which answer represents the atomic number?

Accepted Answer

14

Answer

Si

Answer

Silicon

Answer

28.09

Question 60

Where on the diagram are the least reactive elements located?

Accepted Answer

Textured, Section D

Answer

Light Gray, Section A

Answer

Dark Gray, Section B

Answer

Black, Section C

Question 61

Where on the diagram is the most reactive non-metals located?

Accepted Answer

Section A

Answer

Section B

Answer

Section C

Answer

Section D

Question 62

Ice, solid water, floats in liquid water because ice

Accepted Answer

is less dense than water.

Answer

is more dense than water

Answer

evaporates in water.

Answer

condenses in water.

Question 63

Crys leaves a cold soda on the kitchen counter and forgets it.  After 3 hours, Crys remembers the soda and goes back to get it.  When she touches the drink and the kitchen counter, she notices they are the same temperature.  Select the correct answer.  What happened?

Accepted Answer

The soda and the kitchen counter are at thermal equilibrium.

Answer

The soda and the kitchen counter are level.

Answer

The kitchen counter is a good insulator.

Answer

The soda melted on the kitchen counter.

Question 64

Look at the image.  Select the correct answer.  The structures represent the molecular structure of

Accepted Answer

solids

Answer

liquids

Answer

gases

Answer

plasma

7th Science TCAP Practice

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