exosphere test 1

Question 1

Which variable is changed by the person doing the experiment?

Answer 1

independent variable

Question 2

a statement that can be tested; an educated guess

Answer 2

hypothesis

Question 3

what is the first step in the scientific method?

Answer 3

ask a question/identify the problem

Question 4

A scientist publishes the results of her experiments. Which science skill is she practicing?

Answer 4

communicating

Question 5

true or false: A hypothesis is a fact about what will happen during an experiment

Answer 5

false

Question 6

Which term is defined as the process of understanding the world around you?

Answer 6

science

Question 7

A standard used for comparison

Answer 7

control

Question 8

What is the last step of the Scientific Method?

Answer 8

draw a conclusion

Question 9

What technology helps archaeologist to “see” a buried site before they begin excavating it?

Answer 9

radar

Question 10

true or false: The first step in the Scientific Method is to identify the problem

Answer 10

true

Question 11

Which term describes the step-by-step approach to solving problems?

Answer 11

scientific method

Question 12

The factor being measured in an experiment

Answer 12

dependent variable

Question 13

What step in the Scientific Method comes after you make your hypothesis?

Answer 13

conduct an experiment

Question 14

Why do scientists make maps of archaeological sites?

Answer 14

to record where artifacts were found

Question 15

true or false: The independent variable is the variable that is measured in an experiment

Answer 15

False

Question 16

Which term describes a conclusion that is made about an observation?

Answer 16

inference

Question 17

Bits of information you gather with your senses

Answer 17

observation

Question 18

After collecting data, what is the next step in the Scientific Method?

Answer 18

analyze data

Question 19

Why should an experiment be repeated?

Answer 19

to reduce the chance of error

Question 20

Scientists do all of their work in laboratories

Answer 20

false

Question 21

Which term describes factors in an experiment that stay the same?

Answer 21

constant

Question 22

The use of knowledge gained through science to make products or tools people can use

Answer 22

technology

Question 23

Which statement below is NOT part of the Scientific Method?

Answer 23

change the variables

Question 24

What should an experimenter do after analyzing test results?

Answer 24

draw conclusions

Question 25

true or false: excavating means to dig

Answer 25

true

Question 26

how many centimeters in a kilometer

Answer 26

kilometer

Question 27

how many kilometers in a meter

Answer 27

0.001

Question 28

what season is it in the northern hemisphere when the axis of the earth is tilted away from the sun

Answer 28

winter

Question 29

what is an astrolabe

Answer 29

astronomical instrument used to measure the angle of the stars or moon, an instrument we built in lab that we have to keep all semester, the precursor to a sextant

Question 30

Why would you weigh slightly more at the North or South Pole?

Answer 30

The poles are slightly flattened - you are closer to the center of gravity

Question 31

What is the mass of an object with a weight of 500N?

Answer 31

51 kg

Question 32

What is the definition of volume?

Answer 32

The amount of space ian object takes up

Question 33

At which point is the Earth closest to the Sun in its orbit?

Answer 33

perihelion

Question 34

What was Eratosthenes' greatest error in his calculation of the Polar circumference of the Earth?

Answer 34

He thought the Earth was a perfect sphere

Question 35

What is eccentricity of an orbital path?

Answer 35

how elongated an orbit is, a value between 0 and 1 that measures the flattening or an orbit

Question 36

what is the true shape of the earth

Answer 36

oblate spheroid

Question 37

Which of the following values is the MOST oblate?

Answer 37

0.935

Question 38

What does the rotation of the Earth cause?

Answer 38

day and night

Question 39

How does the Earth's revolution and tilt cause the seasons?

Answer 39

The tilt & revolution causes more direct sunlight on some parts of the Earth

Question 41

What is unique about the summer solstice?

Answer 41

it is the longest day of the year

Question 42

what is the difference between mass and weight

Answer 42

weight is force due to gravity, mass is an amount of matter

Question 43

What is the difference between qualitative and quantitative data?

Answer 43

quantitative is based on measurements of data

Question 44

What is a scientific theory?

Answer 44

an explanation of scientific phenomena that is supported by evidence

Question 45

what is a scientific law

Answer 45

A description of scientific phenomena supported by evidence

Question 46

What is the formula for calculating speed?

Answer 46

speed=distance over time

Question 47

What is DISPLACEMENT?

Answer 47

How far away you are from where you started.

Question 48

what is the Perihelion

Answer 48

when the Earth is closest to the sun along its orbit

Question 49

what is aphelion?

Answer 49

when the Earth is furthest from the sun

Question 50

What are the science process skills?

Answer 50

verbs of science

Question 51

Science relies on empirical evidence, is a social and creative endeavor, is culturally embedded - What is this?

Answer 51

nature of science

Question 52

Eratosthenes is best known for...

Answer 52

Calculating the earth's circumference

Question 53

In the metric system, 6 grams is equivalent to...

Answer 53

600centigrams

Question 54

What metric system unit compares to the English system quart?

Answer 54

liter

Question 55

What metric system unit compares to the English system unit yard?

Answer 55

meter

Question 56

what is a newton

Answer 56

a measures of weight or force in the metric system

Question 57

at what temperature is the boiling point of water

Answer 57

212

Question 58

At what temperature is the melting and freezing point of water?

Answer 58

0°C(32°F)

Question 59

The Earth completes one REVOLUTION around the sun every ________ days.

Answer 59

365.25

Question 60

The Earth completes one REVOLUTION around the sun every ________ days.

Answer 60

1 m/s

Question 61

What is the true shape of the Earth?

Answer 61

elliptical

Question 62

Who measured the polar circumference of the Earth?

Answer 62

Eratosthenes

Question 63

Why was Eratospthenes math on the circumference of the Earth just slightly off?

Answer 63

He used a perfect sphere to calculate the shape

Question 64

What are four motions of the Earth?

Answer 64

Rotation, Revolution, Precession, and Chandler's Wobble