Quiz about 2019 Sci OST Questions

Question 1

A teacher is pushing a cart filled with books down a hallway with a wooden floor. Which change would help the teacher move the cart more easily?

Accepted Answer

putting fewer books in the cart

Answer

removing the wheels from the cart

Answer

carrying the cart instead of rolling it

Answer

laying carpet over the wooden floor

Question 2

The diagram shows three celestial objects and the orbital paths of two of the objects.

Which correctly identifies the objects in the diagram?

Accepted Answer

Object X - Sun

Object Y - Planet

Object Z - Moon

Answer

Object X - Planet

Object Y - Moon

Object Z - Comet

Answer

Object X - Planet

Object Y - Moon

Object Z - Planet

Answer

Object X - Planet

Object Y - Comet

Object Z - Moon

Question 3

The table shows the actual sizes of four stars and how bright each star appears from Earth.

Which star from the table could be the sun?

Accepted Answer

star 3

Answer

star 1

Answer

star 2

Answer

star 4

Question 4

The table shows the source of energy for some organisms in a food web.

Which organisms use photosynthesis as a source of energy?

Accepted Answer

Grass and dandelion

Answer

Sparrow and fungi

Answer

Dandelion and fungi

Answer

Caterpillar and cricket

Question 5

A student takes a picture of the sky from her window once during the day and once again at night.

Why do the sun and the moon appear to be the same size in the pictures?

Accepted Answer

Although the sun is larger, it is farther away than the moon.

Answer

The sun and the moon have the same diameter.

Answer

The sun and the moon are the same distance from Earth.

Answer

Although the moon is larger, it is farther away than the sun.

Question 6

In Ohio, swarms of cicadas hatch from the ground every 17 years. When the cicada population appears, the populations of moles and wild turkeys increase.

Part A: Which organism goes in each of the blank boxes in the food web to show the flow of energy?

Accepted Answer

1 Plants/Trees

2 Cicada

3 Wild Turkey

Answer

1 Wild Turkey

2 Cicadas

3 Plants/Tree

Answer

1 Plants/Trees

2 Wild Turkey

3 Cicada

Answer

1 Cicada

2 Plants/Trees

3 Wild Turkey

Question 7

In Ohio, swarms of cicadas hatch from the ground every 17 years. When the cicada population appears, the populations of moles and wild turkeys increase.

Part B: What role that cicadas play in the food web?

Accepted Answer

Herbivore

Answer

Carnivore

Answer

Omnivore

Question 8

Which motion causes the change from day to night on Earth?

Accepted Answer

Earth rotating on its axis

Answer

Earth orbiting the sun

Answer

the moon orbiting Earth

Answer

the moon rotating on its axis

Question 9

Students design toy cars and then race them against each other. They record the following measurements during the competition: Distance traveled, Weight of car, Time traveled, Volume of car.

What should students do to calculate the average speed of each toy car?

Accepted Answer

Divide the distance traveled by each toy car by the time traveled.

Answer

Divide the weight of each car by its volume.

Answer

Divide the volume of each toy car by its weight.

Answer

Divide the time traveled by each toy car by the distance traveled.

Question 10

Students investigate how mass and force affect the motion of a cart. For trial 1, they use an empty cart. They place the cart on a straight, smooth track. A student applies a brief IN force to the resting cart to move it on the track. When the cart crosses the start line, the force is removed and a stopwatch starts timing. The students record that for trial 1 the cart travels 25 centimeters (cm) in 5 seconds. The diagram shows the setup of the investigation. For trial 2, they change the amount of force used to push the cart from 1 N to 2 N.

Part A: Predict the distance traveled by the empty cart in 5 seconds after it crosses the start line for trials 2 and 3.

Accepted Answer

50 cm

Answer

25 cm

Answer

5 cm

Answer

2,000 cm

Question 11

Students investigate how mass and force affect the motion of a cart. For trial 1, they use an empty cart. They place the cart on a straight, smooth track. A student applies a brief 1N force to the resting cart to move it on the track. When the cart crosses the start line, the force is removed and a stopwatch starts timing. The students record that for trial 1 the cart travels 25 centimeters (cm) in 5 seconds. The diagram shows the setup of the investigation. For trial 3, they change the mass of the cart by adding bricks and they apply 1 N of force just like they did in trial 1.

Part B: Predict the distance traveled by the cart loaded with bricks in 5 seconds after it crosses the start line for trials 2 and 3.

Accepted Answer

5 cm

Answer

25 cm

Answer

50 cm

Answer

2,000 cm

Question 12

A ball moves across a table. The ball moves from right to left as shown by the blue arrow. Forces can be applied to the moving ball. The red arrows indicate those forces and show the direction each force would act on the ball.

Which box is the force that would cause the ball to speed up?

Accepted Answer

Force 2

Answer

Force 1

Answer

Neither Force

Question 13

A ball moves across a table. The ball moves from right to left as shown by the blue arrow. Forces can be applied to the moving ball. The red arrows indicate those forces and show the direction each force would act on the ball.

Which box is the force that would cause the ball to change directions?

Accepted Answer

Force 1

Answer

Force 2

Answer

Neither Force

Question 14

One night while camping, a student observes that the moon and stars appear to move across the sky. Which statement describes why the moon and stars appear to change position?

Accepted Answer

Earth rotates.

Answer

Earth is tilted.

Answer

Earth orbits the sun.

Answer

Earth moves away from the sun.

Question 15

The worksheet includes a description of a classroom activity modeling the invasion of lionfish in the Atlantic Ocean. After explaining the procedure of the activity, the worksheet presents a multiple-choice question based on the activity. The question is accompanied by a diagram illustrating the model results after the first round of the activity. The diagram shows chairs, blue cards, yellow cards, and pieces of yellow cards to represent the spread of lionfish and the impact on native species.

Accepted Answer

The lionfish population continues to grow until the native species are gone.

Answer

The lionfish take a long time to spread through the ecosystem.

Answer

The ecosystem thrives with so many consumers in the food web.

Answer

There are more native species for the lionfish to compete with as the lionfish population grows.

Question 16

Part A: The table shows the feeding relationships among the organisms native to the Atlantic Ocean. Which diagram represents a native food chain that is interrupted by the introduction of an invasive species called lionfish into the Atlantic Ocean?

Accepted Answer

Question 17

Part B: Select the four native populations that decrease as the invasive, non-native lionfish population increases in the Atlantic Ocean. Lionfish hunt in packs and herd their prey of small fish, shrimp, and octopus.

Accepted Answer

small fish

Accepted Answer

octopus

Accepted Answer

large fish

Accepted Answer

shrimp

Answer

aquatic plants

Question 18

A student sets up an experiment to determine the speed of sound in meters per second (m/s) in different materials. Which conclusion can the student make based on the data?

Accepted Answer

Sound travels faster in solids than gases.

Answer

Sound travels fastest in empty space.

Answer

Sound can travel anywhere in the universe.

Answer

Sound travels in water at the same speed it travels in other materials.

Question 19

Sunlight shines through a window into Room 1. A student wants to set up a mirror so that the sunlight will reflect into Room 2. How should the student position the mirror so that sunlight is reflected into Room 2?

Accepted Answer

2019 Sci OST Questions

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