Vocabulary Quiz

Question 1

Density

Answer 1

-The concentration of matter in an object
How tightly packed the particles (atoms/molecules) in an object are.
-Density IS NOT how heavy an object is
-Units: g/cm3 or g/mL

Question 2

Mass

Answer 2

-Mass is a measurement of how much matter is in an object
-Measured using a scale
-Unit: grams (g)

Question 3

Big Bang Theory

Answer 3

-All matter and energy started out in a small, concentrated area
-Area was the size of an atom
-Very dense and VERY HOT!
After a gigantic explosion, matter began to organize into subatomic particles and atoms
(The earliest atoms were hydrogen and helium)

Question 4

Ellipse

Answer 4

Is a geometric shape-an oval.

Question 5

Focus- pl. foci

Answer 5

2 fixed points within an ellipse and help determine the eccentricity of the planets orbit. One of the focal point is at/is the sun and one of them is in space.

Question 5

Inference

Answer 5

-Interpretation of an observation
-Proposes causes, conclusions, and explanations for what has been observed
Ex) prediction of a hurricane or snowstorm

Question 6

Volume

Answer 6

-Volume is the measurement of how much space an object takes up
-Units: mL or cm3
-Formula: (L)(W)(H)
-Water displacement method- another way to measure volume:
180mL – 150mL = 30 mL

The rock has a volume of 30 mL.

Question 7

Celestial Object

Answer 7

Any object in the Universe; Outside or below the Earth’s atmosphere.

Question 8

Roundness

Answer 8

Is defined as the ratio of the surface area of an object to the area of the circle whose diameter is equal to the maximum diameter of the object.

Question 9

Inertia

Answer 9

Objects remain in motion at a constant speed and direction. (Newton’s 1st Law/Law of Inertia)

Question 10

Observation

Answer 10

-Perception of some aspect of the environment by one or more human senses
-Instruments are human-made devices that extends the senses beyond normal limits
-Microscope
-Telescope

Question 11

Equator

Answer 11

An imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°.

Question 12

Eccentricity

Answer 12

It’s used to determine how circular a planets orbit is. The more eccentric the orbit is, the more elliptical it becomes and the less circular.
Eccentricity = Distance between foci/Length of major axis
-Eccentricity answers must be between 0 and 1

Question 13

Smoothness

Answer 13

How smooth or bumpy an object is.

Question 14

Gravity

Answer 14

A downward pull force coming from the Earth’s atmosphere.

Question 15

Protostar

Answer 15

Gravity pulls hydrogen atoms together. As trillions of hydrogen atoms are compressed the temperature increases (Protostar)

Question 16

Black hole

Answer 16

-A region of space resulting from the collapse of a star with an extremely high gravitational field.
-A region of spacetime from which gravity prevents anything, including light, from escaping.
-Found at the center of galaxies

Question 17

Fusion

Answer 17

The reaction that converts hydrogen or other light elements into heavier elements.

Question 18

Constellation

Answer 18

Any of certain groupings of stars that were imagined—at least by those who named them—to form conspicuous configurations of objects or creatures in the sky.

Question 19

Jovian

Answer 19

Is an outer planet.
Are:
-Gas giants
-Surface is made of gas
-Solid core
-Less dense
-Far from the sun (Outer Planets)