Forces with the Magic School Bus

What was the main reason the baseball players and ball had difficulty stopping or changing direction on the field?

• The field was too wet.

• The players were not strong enough.

• There was no friction on the ground.

• The ball was too light.

Why did the bus, after transforming with wings, fail to fly initially?

• The wings were too small.

• There was no air moving past the wings to create lift.

• The bus was too heavy.

• The engine was not powerful enough.

What phenomenon allows the children to stay on the plane's wings while it is flying?

• Gravity pulling them upwards

• The plane's engine suction

• Moving air pushing them up

• Static electricity

Why was the first bridge constructed from a single board unable to support the weight of the child?

• It was too short to reach across

• The board was too flimsy and bent under the weight

• It was made of the wrong material

• The child was too heavy for any bridge

What geometric shape was used to construct the second, stronger bridge?

• Squares

• Circles

• Triangles

• Rectangles

What is the fundamental cause of all sound?

• Light waves

• Vibrations

• Static electricity

• Magnetic fields

What causes high-pitched sounds?

• Slow vibrations that are far apart.

• Fast vibrations that are close together.

• Vibrations that move like ripples on a pond.

• The absence of any vibrations.

What allows bones to move?

• The bones themselves.

• The way the bones are joined together.

• The muscles attached to the bones.

• The hardness of the bones.

What happens when air is squeezed into a smaller space?

• It becomes less dense and expands.

• It disappears completely.

• It becomes more compressed and pushes back harder.

• It changes color and becomes lighter.

What principle is demonstrated when pushing down on trapped air causes something else to bounce up?

• The law of gravity.

• The principle of buoyancy.

• The concept of air resistance.

• The principle that air pushes back when compressed.