4th Grade Science Benchmark Review

• Light is reflected

• Light is refracted

• Light is focused

• Light is blocked

• Material 1 - the light is scattered in all directions. Material 2- the light is refracted.

• Material 1- The light is absorbed. Material 2- The light ray is reflected.

• Material 1 - The light ray is transmitted. Material 2- The light ray is refracted.

• Material 1- The light ray is refracted. Material 2- The light ray is reflected.

Students demonstrate energy transfer in their classroom. Which activity shows a transfer of potential energy to kinetic energy?

• A student sitting in their chair.

• A soccer ball in the recess bucket.

• A water bottle falling off the desk.

• A textbook on top of the desk.

Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

• When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.

• As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.

• When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.

• As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decreases.

What percentage of energy is produced from renewable resources?

• 44%

• 33%

• 27%

• 12%

Which explanation accurately describes how x-rays are used to produce images?

• X-rays have higher energy frequency than light waves and can pass through skin and flesh, but not through bone.

• X-rays have a bright flash that cause an image to be created on film.

• X-rays use a magnifying glass to enlarge the bones.

• X-rays send sound waves through the body to create an image.

An airplane is circling in preparation for landing. How can the scenario be changed from kinetic energy to show potential energy.

• The airplane flew higher.

• The airplane landed.

• The airplane flipped in the air

• The airplane continued to circle.

Which part of the song shows energy is stored?

• Boulder crashing down the mountain.

• Stretch a rubber band and release it.

• Fire is burning.

• Stretch a rubber band and hold it.

Based on the data in the chart above, how could convex lenses be used to enhance human senses?

• They can be used in car mirrors to make items seem clearer.

• They can be used in eyeglasses to make items in black and white appear in color.

• They could be used in microscopes to make smaller items appear smaller.

• They could be used in hand lenses to make smaller items seem larger.

Which best explains the results?

• There will be no change in the hill?

• The height of the hill will be the least when the fan is set on high

• The height of the hill will be the least when the fan is set on low.

• The height of the hill will be the highest when the fan is set on medium.