Science Bowl Round 2

Which of the following must be true for scientific results to be valid?

5.N.2.1

• The results should be drawn in a graph.

• The results should be based on evidence.

• The results should support the ideas of other scientists.

• The results should match the predictions of the scientist.

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-1

Ryder writes a summary of a lesson about heat energy. Which statement should Ryder include in his summary?

5.P.10.4

• Objects that give off heat always give off light energy.

• An object's temperature is not affected by heat transfer.

• Heat always moves from where it is cooler to where it is warmer.

• Heat always moves from where it is warmer to where it is cooler.

Tags

NGSS.MS-PS1-4

LaMont was preparing for a visit to his grandfather's house, and was planning on eating a banana for a snack before leaving. It took him longer than expected to pack, and he did not get a chance to eat the banana before he had to leave his house. LaMont did not want the banana to rot, so he placed it in the freezer before leaving. Which of these statements best explains why LaMont placed the banana in the freezer?

5.P.9.1

• Chemical changes happen only if the temperature is very hot.

• Chemical changes are not affected by a change in temperature.

• Chemical changes generally happen faster at lower temperatures.

• Chemical changes generally happen slower at lower temperatures.

Insects that go through incomplete metamorphosis spend some time as nymphs. Which statement is true about nymphs?

4.L.16.4

• Nymphs are fully developed and can lay eggs.

• Nymphs look nothing like the adults of the same animal.

• Nymphs spin cocoons so they can rest and change form.

• Nymphs molt as they grow from immature animal to adult.

Tameika's mom parked their car on the road. Tameika ran from the car to the house. Which statement is true about Tameika's movement?

• Tameika changed direction but did not change position.

• Tameika's speed was the same throughout the movement.

• Tameika changed position and may have changed directions.

• Tameika's position was the same throughout the movement.

In the savannahs in Africa, elephants and giraffes both use acacia trees for food. What impact would removing these large animals from the savannah most likely have on the surroundings.

5.L.17.1

• The population of acacia trees would decrease.

• The tree population would increase, leaving less area for grass to grow.

• The population of smaller animals would take over because there would be no predators.

• The large animals in other areas would migrate to the area and eat all of the tress on the savannah.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Miguel is observing a rock with ribbon-like layers that was formed deep in the Earth under extreme heat and pressure. What type of rock did Miguel find?

4.E.6.1/4.E.6.2

• magma

• igneous

• sedimentary

• metamorphic

Latoya and her friend Dan were playing in the yard at night with flashlights. Each of them observed that as they walked way from each other, the other's flashlight appeared dimmer. When they walked toward each other, the other's flashlight started appearing brighter again. When they held their flashlights up side by side, they appeared to be exactly the same size and brightness. What would be the best conclusion for them to draw based on their flashlight model?

5.E.5.1

• Two stars of different sizes may be of equal brightness.

• All stars are the same brightness and the same distance from Earth.

• All stars are the same size, but not give off equal amounts of light.

• Two similar-sized stars may vary in brightness when viewed from Earth.

Tags

NGSS.4-PS3-2

NGSS.4-PS4-2

Mass and volume are two properties that can be used to describe matter. Which of the following statements describes what you observe about the mass and volume of the two objects on the balance in the picture?

5.P.8.1

• Both objects have the same mass, but Object B has more volume.

• Both objects have the same volume, but Object B has more mass.

• Both objects have the same mass, but Object A has more volume.

• Both objects have the same volume, but Object A has more mass.

The pitch of a sound depends on how fast an object vibrates. The faster an object vibrates, the higher its pitch. As an object vibrates, it sends sound waves through the air. Low-pitched sounds have waves that are farther apart. The picture shows sound waves made by two different objects that are vibrating. What can you conclude about these two sounds?

5.P.10.1

• Sound 1 is louder.

• Sound 2 is louder.

• Sound 1 has a lower pitch.

• Sound 2 has a lower pitch.

Tags

NGSS.MS-PS4-1