Science Ch 5-9 vocabulary

Question 1

unit of measurement equal to the average distance between Earth and sun; about 150 millilon km

Accepted Answer

astronomical unit

Question 2

celestial object that revolves around the sun, is sphere shape, hasn't cleared around its orbit

Accepted Answer

dwarf planet

Question 3

a gigantic explosion of a large star

Accepted Answer

supernova

Question 4

a star and all the objects that travel around it

Accepted Answer

solar system

Question 5

a representation of a system that has the same relative sizes or distances as the actual system

Accepted Answer

scale model

Question 6

a telescope that is placed on Earth's surface

Accepted Answer

ground-based telescope

Question 7

a celestial object that indirectly revolves around a star

Accepted Answer

moon

Question 8

data is information collected that can be used to support explanations

Accepted Answer

true

Question 9

a collection of stars, dust and gases held together by gravitational forces

Accepted Answer

galaxy

Question 10

a planet that has a hard, rocky surface

Accepted Answer

terrestrial planet

Question 11

a telescope that is located in outer space

Accepted Answer

space telescope

Question 12

a sphere object that revolves around a star and has cleared the neighborhood around its orbit

Accepted Answer

planet

Question 13

all the space, time, matter, and energy that exists

Accepted Answer

universe

Question 14

an attractive force between all objects that have mass

Accepted Answer

gravitational force

Question 15

a unit of length equal to the distance that light travels in space in one year

Accepted Answer

light-year

Question 16

the distance from the center of the planet's core to the outer edge of its atmosphere

Accepted Answer

planetary radius

Question 17

a physical property of matter that describes the amount of mass in a unit of volume

Accepted Answer

density

Question 18

object so dense that nothing w/in a certain distance from it can escape its gravitational field

Accepted Answer

black hole

Question 19

information that supports or refutes a theory

Accepted Answer

evidence

Question 20

small object made of rock, ice, has a highly elliptical orbit, gives off gas & dust in a tail

Accepted Answer

comet

Question 21

the average distance at which the planet revolves around the sun is called the orbital radius

Accepted Answer

true

Question 22

a planet that has a deep atmosphere and no rocky surface

Accepted Answer

gas planet

Question 23

a large cloud of gas and dust in space

Accepted Answer

nebula

Question 24

a small rocky or metallic object that revolves around the sun

Accepted Answer

asteroid

Question 25

the level of measurement being used

Accepted Answer

scale

Question 26

a well tested explanation of scientific observations and experiments

Accepted Answer

scientific theory

Science Ch 5-9 vocabulary

Questions 26

Science Ch 5-9 vocabulary

Questions 26