Unit 3 Asteroids and Comets Flashcards


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1

Why aren’t asteroids spherically shaped?

Their gravitational force is not strong enough

2

What are asteroids made of?

Rock and metal

3

Where do comets spend most of their time?

The Oort cloud

4

A “shooting star” is more accurately called what?

Meteor

5

What is the difference between meteoroids, meteors, and meteorites?

Location

6

What differentiates asteroids from dwarf planets?

Shape

7

What was likely the cause of the extinction of the dinosaurs?

A large asteroid or comet striking the Earth

8

Why does the Moon have more visible craters than Earth?

The Moon lacks an atmosphere to burn up incoming meteors

9

Which objects has the most elliptical orbit?

Comets

10

How many tails do comets have?

Two

11

What is the location of a meteoroid?

Space

12

What is the location of a meteor?

Earth

13

What is the location of a meteorite?

Atmosphere