Fall Fast, Weigh Less: teacher key

Gravity, grade 2 edition, written for 2nd grade. Drop something and watch it fall. See how gravity changes what things weigh.

Read the book. Print this page for the key.

Questions and answers

1. What is gravity?
   • A force that pulls (answer)
   • A kind of air
   • A kind of sea
2. What happens to a dropped ball as it falls?
   • It stops
   • It falls faster and faster (answer)
   • It floats up
3. With no air, which falls faster?
   • The heavy one
   • The light one
   • Neither; they fall at the same rate (answer)
4. What stays the same on the Moon?
   • Your mass (answer)
   • Your weight
   • Your gravity
5. What is the main cause of tides?
   • The wind
   • The Sun's light
   • The Moon's pull (answer)

Words

• gravity: a pulling force
• mass: amount of stuff
• weight: pull on you
• tides: sea rising, falling