Science Test Lessons 11-13

Which statement is true about moving objects?

• Energy of moving objects can not be moved or changed?
• A faster moving object has less energy than a slower moving object.
• A faster moving object has more energy than a slower moving object.
• A faster moving object has the same energy than a slower moving object.

Which is an example of work?

• A dog lying in the grass.
• A book sitting on a shelf.
• A car parked in a parking lot.
• A baseball colliding with a bat.

A student is trying to increase the energy of a soccer ball. Which example will increase the energy the most?

• Gently push the ball.
• Forcefully kick the ball.
• Watch the ball until it moves.
• Allow the ball to sit in the grass.

What happens with 2 objects that collide with each other?

• Energy is transferred and sound is produced.
• Energy is not transferred but sound is produced.
• Energy is not transferred because both objects were moving.
• Energy is transferred from the slower object to the faster object.

A classroom is testing the energy of two toy cars with two different races. First, they make one car collide with the other parked car. Then, they race both cars toward each other so they will collide. Which statement about the investigation is correct?

• In both races, the transfer of energy would be the same.
• The race with one car colliding with the parked car shows the greater transfer of energy.
• The race with two cars racing toward each other and colliding shows no transfer of energy.
• The race with two cars racing toward each other and colliding shows the greatest transfer of energy.

A student pushes 2 pennies toward each other so that they collide. Which statement about the collision is correct?

• The speed and direction of both pennies would change.
• The speed and direction of both pennies would stay the same.
• The speed of both pennies will increase, but the direction will stay the same.
• The speed of one penny will increase and one will decrease, and the direction of both will stay the same.

A moving object hits a resting object. What can you say about the result of that collision?

• Energy is not transferred.
• All of the energy is transferred to sound.
• Energy is transferred from the moving object to the resting object.
• All of the energy is transferred from the resting object to the moving object.

Why do we hear sound after two objects collide?

• Because energy is lost when objects collide.
• Because energy is gained when objects collide.
• Because energy is transferred from our ears.
• Because energy is transferred to the air around the colliding objects.

Which term is a measure of how much energy a sound wave carries?

• Volume
• Intensity
• Collision
• Vibration

Which of the following statements about sound is correct?

• Sound always carries little energy.
• Sound intensity is not linked to volume.
• The measure of the loudness of sound is called volume.
• The measure of the loudness of sound is called intensity.