U5W1 Selection Test: When is a Planet Not a Planet?

Which word has the OPPOSTE meaning of the word approximately?

• almost

• exactly

• tightly

• often

Which of these items would best help a person do a calculation?

• a book

• a computer

• a sheet of paper

• a pair of scissors

Diameter is the distance​ ​ (a)   .

• from side to side
• from top to bottom
• around something
• between two things

Something astronomical has to do with ​ (a)   .

• space
• cooking
• measurement
• weight

What does the word orbit mean?

• to move away from another object

• to move around another object

• to bounce off of another object

• to collide with another object

What does the word spheres mean?

• round three-dimensional objects

• square three-dimensional objects

• triangular three-dimensional objects

• rectangular three-dimensional objects

Complete the dictionary entry.

​ (a)   - Noun 1. Rules used to measure 2. Set standards

• Criteria
• Calculation
• Diameter
• Spheres

Which word has almost the same meaning as the word evaluate?

• anticipate

• judge

• organize

• structure

What is the main difference between the planets in our solar system?

• The planets closes to the sun have a rocky surface and the planets farthest from the sun are made up mostly of gas.

• The planets farthest from the sun have a rocky surface and the planets closest to the sun are made up mostly of gas.

• The planets closest to the sun travel outside their own orbits, but the planets farthest from the sun have their own orbits.

• The planets farthest from the sun travel outside their own orbits, but the planets closest to the sun have their own orbits.

Most scientists think the world began as a ​ (a)   .

• nebula
• star
• comet
• planet