Question 1

What is a model?

Accepted Answer

A model is a representation of an object or system

Question 2

Which are examples of a physical model?

Accepted Answer

model car, flower, solar system,

Answer

Mathematical, graph, equation

Answer

big bang theory, water cycle, nitrogen cycle

Question 3

Explain why a weather map of the current weather is a mathematical model.

Accepted Answer

It uses data to make predictions.

Answer

weather is a concept

Answer

It use images to represent something real

Question 4

What are some limitations of models?

Accepted Answer

The model may not behave the same way as the real thing, may not be to scale or the same size, not made of the same material, etc.

Question 5

What two things make a hypothesis valid?

Accepted Answer

testable and supported by evidence

Answer

correct statement and supported by evidence

Answer

correct and testable

Question 6

How many milliliters are in 26 liters?

Accepted Answer

26,000 milliliters

Answer

260,000 milliliters

Answer

2,600 milliliters

Question 7

How is length measured in SI units?

Accepted Answer

meters

Answer

Kelvin

Answer

grams

Answer

cm3

Question 8

Explain how the volume of an irregular shaped solid can be determined using a graduated cylinder.

Accepted Answer

Fill the cylinder to a given mark, note the level of water. Add the object and see how much the water rises. The difference between the two marks is the volume of the object.

Question 9

Define density

Accepted Answer

density is the amount of matter in a given volume

Answer

density is the volume an object takes up

Answer

density it the weight of an object

Question 10

What is the equation used for calculating density?

Accepted Answer

Density= Mass/Volume

Answer

Density= Weight/Volume

Answer

Density=Volume/Mass

Question 11

What are the units for density?

Accepted Answer

g/cm3

Answer

cm3

Answer

g/cm

Answer

g

Question 12

Calculate the density of a piece of rock that has a mass of 42 grams and a volume of 8 cm³

Accepted Answer

5.25 g/cm³

Answer

0.19 g/cm³

Answer

5.25 g/cm

Answer

336 g/cm3

Question 13

True or False: 1mL = 1cm3

Accepted Answer

true

Answer

false

Question 14

Name three types of safety equipment use when dealing with hazardous chemicals.

Accepted Answer

goggles, aprons, gloves

Answer

apron, graduated cylinder, gloves

Answer

beaker tongs, goggles, splash guard

Question 15

The first 2 steps of the Scientific method are observation and state the problem put the remaining steps in order:

Question 16

Explain how the volume of an irregular shaped solid can be determined using a graduated cylinder.

Accepted Answer

Fill the cylinder a given mark, note the level of the water. Add the object and see how much the water rises. The difference between the two marks is the volume of the object.

Question 17

What is a scientific observation?

Accepted Answer

any use of the senses to gather information

Answer

a known fact

Answer

any use of research to gather information

Question 18

When graphing, what does DRY stand for?

Accepted Answer

Dependent variable is the response and is graphed on the y-axis

Answer

Manipulated variable is the independent variable and is graphed on the x-axis

Answer

Dependent variable is the response and is graphed on the x-axis

Question 19

When graphing, what does MIX stand for

Accepted Answer

Manipulated variable is the independent variable and is graphed on the x-axis

Answer

Manipulated variable is the independent variable and is graphed on the y-axis

Answer

Dependent variable is the response and is graphed on the y-axis

Question 20

What is a descriptive investigation and give an example.

Accepted Answer

when observations are recorded but no comparisons are made and no variables have been manipulated (ex. watching and recording the activity of an animal in its environment, single moment)

Answer

an experiment that is a controlled set of conditions used to test a hypothesis with a manipulated variable (ex. giving light to one plant and not another to see which grows better)

Answer

when comparisons are made between two or more items without manipulating variables (ex. watching and recording two of the same animals living in the same environment)

Question 21

When would you measure a length or distance in kilometers rather than meters?

Accepted Answer

Kilometers are used for long distances, such as from town to town or country to country

Answer

Kilometers are used for short distances

Answer

Kilometers are never used

Question 22

What conclusion can be drawn from the graph?

Accepted Answer

Temperature (dependent variable) generally increases as day/time (independent variable) increases.

Answer

Temperature (dependent variable) generally decreases as day/time (independent variable) increases.

Answer

Temperature (independent variable) generally increases as day/time (dependent variable) increases.

Question 23

How do you identify the independent and dependent variable in an if-then hypothesis statement?
For example: Name the independent and dependent variable in the following statement, “ If the amount of sunlight a sunflower receives increases, then the plant will live longer.” See notes

Accepted Answer

Amount of sunlight (IF) is the independent variable. How long the plant lives (THEN) is the dependent variable

Answer

Amount of sunlight (IF) is the dependent variable. How long the plant lives (THEN) is the independent variable

Answer

it is impossible to tell which is which

Answer

Amount of sunlight and How long the plant lives are both the independent variable and time is the dependent variable

Question 24

What is a psychrometer used for?

Accepted Answer

air pressure

Answer

wind speed

Answer

relative humidity

Question 25

What does a barometer measure?

Accepted Answer

air pressure

Answer

wind speed

Answer

relative humidity

Question 26

What does an anemometer measure?

Accepted Answer

wind speed

Answer

relative humidity

Answer

air pressure

Question 27

What does a spring scale measure?

Accepted Answer

force in Newtons

Answer

volume in cm

Answer

mass in lbs

Question 28

What are Beakers and Triple beam balances used for?

Accepted Answer

Beakers are used to hold liquids, Triple beam balances measure mass in grams

Answer

Triple beam balances are used to hold liquids, Beakers measure mass in grams

Answer

Beakers are used to measure mass in ml, Triple beam balances measure volume in grams

Question 29

What are Graduated cylinders, and Thermometers used for?

Accepted Answer

Graduated cylinders measure volume in ml, Thermometers measure temperature

Answer

Graduated cylinders measure temperature, Thermometers measure volume in ml

Answer

Graduated cylinders measure mass in ml, Thermometers measure air pressure

Question 30

Any resource that limits the size of a population such as food, water, and shelter

Accepted Answer

What is a limiting factor

Question 31

the largest population that can live in the same area for a long time

Accepted Answer

What is carrying capacity?

Question 32

Adaptations are traits that improve the chances of survival and reproduction. Some traits are favorable for a species depending on their environment. Genetic variation allows individuals to have their own traits in order to survive in their environment.

Accepted Answer

What are adaptations? Why is genetic variation important?

Question 33

producer is an organism that makes its own food. Plants are producers

Accepted Answer

In a food web, what is a producer and what organisms are these?

Question 34

Examples of predator/prey

Accepted Answer

What are some predator/prey examples

Question 35

See image

Accepted Answer

a predator eats the prey

Question 36

See image

Accepted Answer

bear/fish

Question 37

See image

Accepted Answer

owl/rat

Question 38

See image

Accepted Answer

snake/mouse

Question 39

Consumers get energy from other organisms.

Accepted Answer

What is a consumer

Question 40

Competition is when two or more organisms or populations try to use the same limited resources such as food, water, shelter

Accepted Answer

What is competition?

Question 41

plants, algae, and phytoplankton

Accepted Answer

What are producers in the food web

Question 42

mouse/grasshopper

Accepted Answer

What are examples of predator/prey relationships in the food web?

Question 43

See image

Accepted Answer

shrew/grasshopper

Question 44

See image

Accepted Answer

hawk/duck

Question 45

the mouse, shrew, and duck populations would decrease

Accepted Answer

What would be an immediate effect to the rest of teh ecosystem if more coyotes are introduced into this ecosystem?

Question 46

trees, shrubs, grasses

Accepted Answer

What are the producers in the food web?

Question 47

deer, mice, crickets, rabbit

Accepted Answer

What are the primary consumers in the food web?

Question 48

See image

Accepted Answer

What are some secondary consumers in the food web?

Question 49

See image

Accepted Answer

What biotic factors do mice depend on to survive?

Question 50

mountain lions, snakes, hawks, mice

Accepted Answer

Name a predator/prey relationship in the food web above.

Question 51

See image

Accepted Answer

shrubs, crickets

Question 52

See image

Accepted Answer

Mountain lions/deer, snakes/mice, hawks/rabbits

Question 53

hawks and mountain lions would decrease, grasses would increase

Accepted Answer

What would an immediate effect be to the rest of the ecosystem if the rabbit population decreased?

Question 54

Deer have more food sources

Accepted Answer

Deer depend on trees, shrubs, and grasses as their food source, and rabbits depend on grasses and shrubs. If there were a drought, why might the deer population remain larger than the rabbit population?

Question 55

flow of energy

Accepted Answer

What do arrows in a food web represent?

Question 56

Algae, trees, phytoplankton, grasses, nuts

Accepted Answer

Which of the following might be producers on a food web? Snakes, algae, trees, phytoplankton, bacteria, grasses, cockroaches, nuts, fish

Question 57

biotic are living factors

Accepted Answer

What are biotic and abiotic factors in an environment?

Question 58

See image

Accepted Answer

abiotic are nonliving factors

Question 59

See image

Accepted Answer

Describe a wetland.

Question 60

A wetland is an area covered by fresh water for all or part of the year

Accepted Answer

Describe an estuary.

Question 61

See image

Accepted Answer

An estuary is a partly enclosed body of water, where river water mixes with salty ocean water.

Question 62

natural selection is the process by which individuals with favorable traits survive and reproduce. The population would die out

Accepted Answer

What is natural selection? What happens to a population over time if they do not have favorable traits

Question 63

See image

Accepted Answer

A population would increase over time if there is a decrease in _________________ (choose all that apply)

Question 64

predators, diseases

Accepted Answer

predators, food sources, diseases

Related quizzes

Related quizzes