6th Grade Science Practice #1

Two flashlights are turned on. The light rays they create are shown in the diagram. These light rays best illustrate that...

• Ray 1 is reflected and Ray 2 is refracted

• both rays are refracted

• Ray 1 is refracted and Ray 2 is reflected

• both rays are reflected

At each higher level of the food pyramid...

• the amount of energy decreases.

• the amount of organisms increases.

• the amount of energy increases.

• the size of organisms increases.

Photosynthesis is the process that converts carbon dioxide and water into...

• carbon and oxygen.

• sugar and hydrogen.

• sugar and oxygen.

• nitrogen and carbon.

The picture shows an exchange of gases between plants and animals. What gas is MOST LIKELY represented by the arrow labeled X?

• carbon dioxide

• hydrogen

• nitrogen

• oxygen

Which statement best explains how a lunar eclipse occurs?

• Earth is aligned between the Sun and the Moon, and is casting a shadow on the Moon.

• The Moon is aligned between Earth and the Sun, and is blocking all or part of the Sun's surface.

• The Sun is aligned between Earth and the Moon, and the Moon's surface cannot be seen.

• Venus is aligned between the Sun and Earth, and the Sun's surface cannot be seen.

What keeps the planets in orbit around the Sun?

• distance

• gravity

• shape

• light

Which phase of the Moon would be seen by people on Earth at this time?

• full moon

• new moon

• waxing gibbous

• waning gibbous

Which planet is closest to the Sun?

• Jupiter

• Mars

• Venus

• Mercury

Why does the amount of daylight change during the course of a year?

• The amount of light and heat radiated by the Sun changes at different times of the year.

• The distance between the Sun and Earth changes from summer to winter.

• The North Pole points more toward the Sun at one time of the year than another.

• Earth rotates at different speeds at different times of the year.

Which label on the model represents a wavelength?

• Q

• R

• S

• T