Science Review Third Grade

Landon observed the Sun and a fire. Which types of energy are given off these objects?

• light and sound energy

• light and heat energy

• heat and sound energy

• mechanical and heat energy

Which object uses electrical energy to create sound?

• soccer ball

• light bulb

• drum

• stereo

Michael left his skateboard in the sunshine on a hot, sunny day. It became very hot. How will the temperature of the skateboard change if he places it in the shade?

• It will not change

• It will become cooler

• It will get hotter

Timothy was playing center field when his friend hit a line drive right at him. Timothy caught the ball in his baseball glove. What kept gravity from pulling the ball to the ground?

• the bat

• the ball

• the glove

• the field

Bailey jumps on a trampoline and flips in the air. What does this example show about gravity?

• gravity can be overcome with enough force

• people are not affected by gravity

• gravity doesn't work on trampolines

• people cannot overcome gravity

What function do the stamen and pistil do for a plant?

• they help the plant to make their own food

• they help the plant reproduce

• they transport water and other nutrients to the rest of the plant

• they help to support the plant

A student plants a flower in a pot. As it begins to grow, he notices that the plant grows toward the sun and the roots grow down. What is causing the roots to grow down?

• light

• water

• air

• gravity

Which of the following vertebrates have live babies?

• whale

• alligator

• fish

• frog

Phillip performed an experiment to see which balloon could be blown up the biggest. Which empirical evidence would be best for Phillip to use to validate his experiment?

• the color of the balloons

• the size of the balloons when they are blown up

• the balloon that lasted the longest

• the type of air in the balloon

Why would a scientist repeat an investigation that someone else did?

• to change the procedures

• because he likes to do experiments

• to prove the scientist was wrong

• to see if he gets the same results