Jeopardy A?B?C?D?E? $100 $200 $300 $400 $500

ANSWER This is what you use when a friend serves you a volleyball and you hit it back.

QUESTION What is: A force to make the ball change directions.

ANSWER TRUE OR FALSE: A force causes an object to move, stop moving, and chance its direction of movement.

QUESTION What is: TRUE, TRUE, TRUE! A force will make an object move, stop moving, and change its direction of movement.

ANSWER This is the force that pulls any two objects toward each other.

QUESTION What is: GRAVITY

ANSWER This is what you do to tell that on object is moving.

QUESTION What is: compare it to other objects.

ANSWER TRUE or FALSE: Astronauts weigh less on the moon than on Earth because the moon has less gravity than Earth.

QUESTION What is: TRUE - the moon has less gravity than Earth.

ANSWER This is the force that slows down moving objects.

QUESTION What is: FRICTION

ANSWER TRUE OR FALSE: Gravel is the best surface to use when you want to have a rollerskate race.

QUESTION What is: FALSE, FALSE, FALSE. The best surface to have a rollerskate race on is blacktop.

ANSWER This is the energy an object has because it is in motion.

QUESTION What is: Kinetic Energy

ANSWER A child sitting at the top of the slide has this kind of energy.

QUESTION What is: Potential Energy

ANSWER TRUE or FALSE: A battery-powered car uses chemical energy.

QUESTION What is: TRUE, TRUE, TRUE!!

ANSWER This is the type of energy that a person uses when pedaling a bicycle.

QUESTION What is: Mechanical Energy

ANSWER These are the forms of energy that are produced when a candle is burned.

QUESTION What is: heat and light energy.

ANSWER A student rubs a stick across the teeth of a comb. The mechanical energy is being changed into this form of energy.

QUESTION What is: sound energy

ANSWER TRUE OR FALSE: When a battery is used to light a bulb, chemical energy is changed into electrical energy.

QUESTION What is: TRUE, TRUE, TRUE!!

ANSWER This is the form of energy that is stored by the batteries inside a flashlight.

QUESTION What is: Chemical Energy

ANSWER TRUE or FALSE: Having red paint on a wagon help to best reduce the force needed to move the wagon.

QUESTION What is: FALSE, having wheels on a wagon will best reduce the amount of force needed to move a wagon, not the color of the wagon.

ANSWER There are three balls with different weights and are rolled down an incline one at a time. They each strike a wooden block at the bottom of the inclined plane. The ball with the ________ weight will move the block the greatest distance.

QUESTION What is: greatest. The ball with the greatest weight will move the wooden block the farthest from the inclined plane.

ANSWER When sandpaper is rubbed over wood, both surfaces become warm. This is a result of

QUESTION What is: FRICTION

ANSWER TRUE or FALSE: If there were no air friction, a thrown ball will still fall to the ground.

QUESTION What is: TRUE. Even without friction, gravity is still acting on the thrown ball.

ANSWER TRUE OR FALSE: You are doing work when you watch TV.

QUESTION What is: FALSE, but you are doing work when you carry laundry downstairs.

ANSWER This is why it will take more force to push a sled over a rocky road then over ice.

QUESTION What is: Because of FRICTION

ANSWER This is why it will take more force to pull two friend in a sled than an empty sled.

QUESTION What is: because there is an increase in mass in the sled (weight of friends).

ANSWER These are the two forces that act on a thrown ball to make it slow down and make it fall to Earth.

QUESTION What is: GRAVITY and FRICTION

ANSWER This is what happens to the potential and kinetic energy of a leaf as it falls from a branch to the ground.

QUESTION What is: The potential energy decreases and the kinetic energy increases.

ANSWER TRUE or FALSE: Two children are lifting boxes that differ in weight. The child that does more work is the one that lifts the box with the greatest weight.

What is: TRUE