Matter P.5.5A-C
A Studrent drops three onjects into a container of water: a small rubber ball, a meatal coin. and a piece of cork. The student observes that the metal coin sinks, while the rubber band and cork float.
Which of the following best explains why the objects float or sink?
A. The coin sinks because it is a solid.
B. The coin sinks because it tis heavier than the ball and cork.
C. The ball and cork float because they are denser than water.
D. The ball and cork float because they are less dense than water.
D. Less Dense than water.
Which staterment BEST explains the process of photosynthesis in plants?
A. Plants make sugar using sunlight and CO2
B. Plants create oxygen by converting nitrogen on the soil.
C. Plants generate energy from water and oxygen for food.
D. Plants produce food by baking sugar into oxygen and water.
A. Plants make sugar using sunlight and CO2
A city is designing a system to improve the safety of the roads during the winter months. The goal is to increase friction between car tires and icy roads to prevent accidents. The engineering team has several materials to consider for this task. They need to choose the most effective materials for increasing friction.
Which action would most effectively increase friction on the icy roads?
A. Applying Wax to the road.
B. Applying sand to the roads.
C. Covering the raod with water.
D. Installing heated panels on the road.
B. Applying sand to the roads.
Which of the following actions helps conserve Earth's natural resources by recycling waste?
A. Planting more trees.
B. Recycling materials like paper
C. Using water to clean sidewalks
D. Driving long distances frequently
Recycling materials like paper.
A town near a river experiences flooding every year during heavy rains. The town wants to create a system to reduce the damage caused by floods.
Which idea would help the town reduce damage from flooding?
A. Create levees along the riverbanks to hold back water.
B. Build houses closer to the river to monitor water levels.
C. Remover plants near the river to let the water flow faster.
D. Add more building on the floodplain to absorb the water
A. Create levees along the riverbanks to hold back water.
Which two of the following are evidence that a chemical change has occured?
A. :A peice of paper is cut into smaller pieces.
B. Water freezes in the ice.
C. A nail left outside to rust.
D. A Slice of bread turns black after being left in a toaster for too long.
E. A Puddle of water evaporating after being exposed to the heat from the sun.
C & D
Which of the ecosystems is cold, treeless, and supports animals such as polar bears?
A. Desert
B. Grassland.
C. Rain Forest.
D. Polar Tundra
A Ball i splaced at the top of a smooth ramp. whhen released, it rolled down and moves quickly across the flat surface at the bottom. The students then places a rough surface at the bottom of the ramp.
How does adding the rough surface at the bottom of the ramp affect the balls motion?
A. Friction changes the balls direction.
B. Friction removes energy, so the ball slows.
C. Friction adds energy, so the ball speeds up.
D. Friction makes the ball roll the same direction.
B. Friction removes energy and slows the ball dow.
Which discovery helped prove the earth and other planets orbit the sun?
A. Copernicus used a telescope to map the stars.
B. Galileo saw moons orbiting jupiter using a telescope.
C Aristotle calculated the size of earth compared to the moon.
D. Ptolemy's Model showed that planets moved in small circles around the earth.
B.Galileo saw moons orbiting jupiter using a telescope.
A group of students is designing a vessal to carry marbles across a small pond of water. They test their first boat, but it sinks when carrying only five marbles.
What design improvment could help the boat carry more marbles without sinking?
A. Building higher walls on the boat.
B. Using materials that absorb water.
C. Using materials that is more dense.
D. Making the boat's base wider and flatter.
D. Making the boat's base wider and flatter.
A Student heats a piece of wax until it melts. After the heat is removed, the waz cools and hardens back into a solid. Which of the following sentences expalins ehy this is a physical change?
A. The wax changes its mass.
B. The wax evaporates whean heat is removed.
C. The wax forms a new substance when it melts.
C
A. Artificial Light.
B. Reflected lights.
C. Heat from surrounding rocks.
D. Chemical energy from hydrothermal vents.
A. Artificial Lights
An apple is dropped from a tree and falls to the ground. What force causes the apple to fall?
Gravity
Over the course of a month, a student observes the phases of the moon and records these ina journal. The student notices that the moon appears to change shape every few days. What causes the moon to have phases thoughtout the month?
A. The moon's position in relation to earth and the sun.
B. The moon spinning faster at certain times of the month
C. The earth continually casting shadows on the moon as it moves though space.
D. The moon getting closer and the farther from earth, changing how much is seen.
A. The moon's position in relation to earth and the sun.
What causes the lunar eclipse to oocur?
A. The moon moves out of earths orbit, creating a temporary alignment.
B. The moon is between the earth and the sun, casting a shadow on earth.
C. The earth is between the sun and the moon, casting a shadow on the moon.
D. The sun id between the earth and the moon, blocking light from reaching earth.
C. The earth is between the sun and the moon, casting a shadow on the moon.
A scientist is studing different types of materials to find out which can conduct electricity. Each sample is tested with a small electrical circuit to determine wheather electricity flows through it.
Whuch material is most likly to conduct electricity during the scientist's tests?
A. Copper
B. Glass.
C. Plastic
D. Wood
Copper
Some plants and alge live in envirorments where they do not recieve direct sunlight, such as under thick forest canopies or deep in the ocean.
How are these organisms able to carry out photosynthesis?
A. They use energy stored in the soli instead of sunlight.
B. They vreat their pwn light tpo perform photosynthesis.
C. THey Absorb sunlight that filters through other materials, such as water or leaves.
D. They do not perform photosynthesis and rely entirely on eating other organisms for energy.
C.
An object is thrown straight up into the air and reaches its highest point. What can be predicted about its motion next?
A.The object will move horizontally.
B.The object will continue moving up.
C.The object will hover at this point.
D.The object will start moving downwards.
D. The object moves downward
What constellation is visible year-round and also changes position in the sky thoughout the year?
Ursa Major and Usa Minor
Which statement best explains why summer days are longer and warmer than winter days?
A. Earth orbits closer to the sun in summer.
B. Earth spins in the opposite direction during the summer months.
C. Earth's rotation slows down in summer, causing more daylight.
D. Earths Tilt allows more sunlight to reach the surface in the summer.
D. Earths Tilt allows more sunlight to reach the surface in the summer.
A Student creates two saltwater solutions:
Solution A: 1 teaspoon of salt in 1 cup of water.
Solution B: 3 teaspoons of salt in 1 cup of water.
Which statement correctly compares the two?
A. Solution A and Solution B have the same concentration.
B. Solution A is more concentrated because it has less salt.
C. Solution B is more concentrated because is has more salt.
D. Solution B is less concentrated because it has more water.
C. Solution B is more cincentrated because it has more salt.
Which type of energy do plants use to make their own food durning the process of photosynthesis?
A. Chemical
B. Electrical.
C. Heat.
D. Light
D.Light
A Group of students experimented with a toy car on a ramp in their classroom . They placed the car at the top of the ramp and then let it roll down too see how fast the car could go by the time it reached the bottom.
Which TWO changes would most likely increase the car's kinetic energy as it moves down the ramp?
A. Increaseing the angle of the ramp
B. makeing the ramp's surface more rough.
C. Increaseing the force pushing the car down the ramp
D. Decreasing the length of the ramp sp the car can travel further.
E. increaseing the width of the ramp tp keep the car from falling off.
A and C
Long ago, People believed earth was the center of the solar system. Later,Scientist discovered that the sun is actually at the center.
What two discoveries helped support the idea that the sun is at the center of the solar system?
A. New maps of the stars showed that earth us the largest planet.
B. The Sun-centered model showed that earth does not rotate or move.
C. The invention of the telescope allowed moons to be seen orbiting other planets.
D. Observations of planetary movement matched predictions of the sun- centered mode.
E. The earth- centered model could not explain the way planets appeared to move in the night sky.
C. The invention of the telescope allowed moons to be seen orbiting other planets.
D. Observations of planetary movement matched predictions of the sun- centered mode.
A student mixes 50 mL of vegetable oil with 50mL of water in a beaker. After stirring the mixture, the student observes the two liquids separate into layers.
Which statement describes the behavior of the substances in the mixture?
A.The two substances react chemically to create a new compound.
B. The two substances combine into a uniform mixture that cannot be separated.
C.The two substances for a solution because they fully combine into one liquid.
D. The two substances maintain their original properties because they do not mix.
D. The two substances maintain their original properties because they do not mix.