Science

The picture below shows a cumulonimbus cloud forming over an ocean. Which statement best explains how the sun and the ocean interact to form a cumulonimbus cloud?

• Heat from the sun causes clouds in the area to gather over the ocean and form one large cumulonimbus cloud.

• Heat from the sun warms the ocean, causing water to evaporate. The water vapor then condenses to form a cumulonimbus cloud.

• Light from the sun shines on the ocean, causing water vapor to condense. The water then evaporates to form a cumulonimbus cloud.

• Light from the sun causes ocean water to reflect water vapor into the air and gather over the ocean into a cumulonimbus cloud.

What would happen if the arctic hare was introduced into a new environment without snow and ice?

• The species would become overpopulated.

• The chance of young hares surviving to adulthood and reproducing would be greatly diminished.

• The hare would be a popular target for game hunters.

• All of the above.

Some parts of the Himalayas are growing as much as 1cm/year. What is causing the fast, vertical growth?

• Subduction zone is near the mountain chain.

• Huge underground geysers create pressure to push the mountains higher

• Sediments from eroded materials are being deposited on top of the mountains

• Two continental plates are colliding

• travels in straight lines and reflects from the surface of the mirror

• enters the mirror and changes direction when it is refracted by the back of the mirror

• refracts in the glass of the mirror and is spread out all over the room

• travels through air and does not change its direction in air

• Dry, rocky mountains

• Forests of pine trees

• Tall, spiny cacti

• Lakes and rivers

Electrical cords, such as the cords of a television or the cord on a toaster, are covered with rubber or plastic. What would you expect to happen if a portion of the rubber covering were missing when you tried to plug the cord in?

• The appliance would not work after it plugged in

• The person plugging the appliance in would feel an electric shock

• The cover does not matter, all appliances would work normally

A student is working on a science project and is going through each step of the scientific method. After the student conducts his or her first experiment and records the results of the experimental test, what should the student do next?

• communicate the results

• Draw a conclusion

• Repeat the experiment

• Create a hypothesis

Ripening of food items is a _____ change.

• Reversible

• Irreversible

Which statement does NOT correctly compare silicon with another element?

• Silicon is a better conductor of electricity than sulfur.

• Silicon conducts electricity as well as copper does.

• Silicon is a solid at room temperature, but argon is a gas.

• Silicon is less malleable than silver.

If you were located at Point X, which path would be the steepest path to the shoreline?

• Path A

• Path B

• Path C

• Path D