Space & Astronomy
The time it takes Earth to complete one revolution around the Sun is______
a. season
b. a year
c. lunar cycle
d. a day and night
b. a year
What is true about how the number of daylight hours is different at different times of the year on the West Coast of the United States?
a. The number of daylight hours is greater in December than it is in March
b. The number of daylight hours is greater in June than in September
c. The number of daylight hours is greater in January than in September
d. The number of daylight hours is greater in September than in June
b. The number of daylight hours is greater in June than in September
Look at the following model of an ecosystem. Which statement is true?
a. A fox eats both plants and animals
b. A snail is a secondary consumer
c. An earthworm is a decomposer
d. A wood mouse is an herbivore
c. An earthworm is a decomposer
33. What is a scientific theory supported by?
a. assumptions
b. opinions
c. evidence
d. guesses
c. evidence
Where is your shadow when the Sun is right behind you?
a. in back of me
b. in front of me
c. beside me to the right
d. beside me to the left
b. in front of me
True or False: Our Sun is the brightest and biggest star in the universe.
False
Wind weathers and erodes sandstone forming an arch. What two spheres is this an interaction between?
a. geosphere and atmosphere
b. hydrosphere and biosphere
c. biosphere and atmosphere
d. atmosphere and hydrosphere
a. geosphere and atmosphere
In this food web, what do the arrows show us?
a. The arrows point to the organism that is eaten
b. The arrows point to the organism that is more important in the ecosystem
c. The arrows show the flow of energy in the ecosystem
d. The length of the arrow shows whether the organism is a producer or consumer
c. The arrows show the flow of energy in the ecosystem
29. A glass of water weighs 300 grams. A student adds 25 grams of salt to the water. The student then stirs the water until the salt is no longer visible. What is the mass of the mixture of salt and water?
a. 25 grams
b. 275 grams
c. 325 grams
d. 300 grams
c. 325 grams
Butter has a melting point of 35ºC. Ice has a melting point of 0ºC. What would most likely happen if a plate of butter and a plate with ice were both placed on the table for 3 hours at 20ºC?
a. The butter and the ice will both remain solid
b. The butter and ice will both become liquids
c. The butter will remain a solid, and the ice will turn to water
d. The butter will become a liquid, and the ice will remain solid
c. The butter will remain a solid, and the ice will turn to water
Using the Stars Distances from Earth below, which star would appear the dimmest in the night sky?
Star 1: 8.6 light years from Earth
Star 2: 6.0 light years from Earth
Star 3: 9.4 light years from Earth
Star 4: 7.7 light years from Earth
Star 3
Water from a lake evaporates into the atmosphere. Which two spheres are primarily interacting?
a. geosphere and atmosphere
b. hydrosphere and biosphere
c. biosphere and atmosphere
d. atmosphere and hydrosphere
d. atmosphere and hydrosphere
In a forest ecosystem, rabbits eat grass and foxes eat rabbits. What would most likely happen if the rabbit population greatly decreased?
a. The fox population may decrease because there is less food available
b. The grass population would immediately disappear
c. The fox population would increase because there are fewer rabbits
d. The rabbits would become producers
a. The fox population may decrease because there is less food available
Students want to do an investigation to see if combining two substances causes the properties of the substances to change. Which investigation shows that the chemical properties of the substances have changed?
a. Sand sinks to the bottom of a water glass when sand and water are combined
b. Bubbles form when baking soda and vinegar are combined
c. Ranch dressing covers the French fry when it is dipped in ranch
d. Cereal gets soggy when milk is added
b. Bubbles form when baking soda and vinegar are combined
A student pushes two toy cars across the floor. One car is heavier than the other. The student uses the same amount of force to push both cars. What will most likely happen?
a. The heavier car will move faster than the lighter car
b. The lighter car will move farther because it has less mass
c. Both cars will move the same distance every time
d. The heavier car will stop friction from acting on it
b. The lighter car will move farther because it has less mass
A 5th grade student is looking for evidence that the Earth rotates on its axis. Which of these would provide the best evidence?
a. Different amounts of rainfall each day
b. The appearance of shadows changing throughout the day
c. Differences in brightness of stars in the night sky
d. The different phases of the moon over one month
b. The appearance of shadows changing throughout the day
The surface of the Earth is mostly covered by__________
a. freshwater
b. saltwater
c. groundwater
d. ice sheets
b. saltwater
What is not displayed in the model of a food web?
a. Decomposer
b. Primary and secondary consumers
c. The original source of all energy in the food web
d. Producers
c. The original source of all energy in the food web
32. Two identical balls are dropped from the same height above the ground. One ball is in North America in the Northern Hemisphere. The other ball is in New Zealand in the Southern Hemisphere. Which statement is true about gravity acting on both the first and second ball?
a. Earth’s gravity causes the balls to fall away from each other
b. Earth’s gravity causes the balls to fall towards each other
c. Both balls are pulled to the Southern Hemisphere
d. Earth’s gravity causes both balls to experience a force directed towards Earth’s center
d. Earth’s gravity causes both balls to experience a force directed towards Earth’s center
A metal spoon is placed in a cup of hot soup. After a few minutes, the handle of the spoon becomes warm. What caused the handle to become warm?
a. Light energy moved through the spoon
b. Sound energy traveled through the spoon
c. Heat energy moved through the metal spoon
d. The spoon created its own heat energy
c. Heat energy moved through the metal spoon
Students in a 5th grade class are learning about constellations. They have learned that some constellations can be seen in the night sky all year long. Other constellations can be seen only during certain times of the year. Which one of these is the best explanation for this phenomena?
a. Earth orbits around the Sun once each year. Our view into space through the night sky changes as we orbit. The the night sky looks slightly different each night because Earth is in a different spot in its orbit.
b. The Earth rotates on its axis. Some nights you might be facing a different direction than on other nights and have a different view of constellations.
c. The constellations that are farther away can only be see when you are at a high elevation. Therefore, if you are at sea level, there are some constellations that are not visible.
d. Constellations roam around in a figure 8 and the curves are so large that sometimes they move out of our line of vision.
a. Earth orbits around the Sun once each year. Our view into space through the night sky changes as we orbit. The the night sky looks slightly different each night because Earth is in a different spot in its orbit.
Why is the temperature higher at midday than it is in the evening or morning?
a. The Sun is setting at midday
b. The Sun is at its highest angle at midday and the sunlight hits directly
c. The Sun is rising at midday
d. The Earth is closer in orbit to the Sun at midday making the sun stronger
b. The Sun is at its highest angle at midday and the sunlight hits directly
In this diagram of an energy pyramid, which statement is true?
a. The decomposers are shown at the bottom
b. The primary producers are plants
c. The tertiary consumers eat the producers
d. Grass is a decomposer
e. Secondary consumers eat producers
f. The rat may eat the owl
b. The primary producers are plants
Students in a 5th grade class want to investigate if sunlight makes a difference in plant growth. They have two plants that are the same size. How should they test this?
a. One plant gets 5 ml of water every two days and the other plant does not get water
b. One plant is placed in sunlight for 6 hours a day and the other plant is placed in a dark cupboard
c. One plant is placed in sunlight for 6 hours a day and the other plant is placed in the dark cupboard, and the height of the plants is measured and recorded every week for 5 weeks
d. One plant is placed in sand and the other is planted in potting soil. Plants are given water and 6 hours of sunlight a day and are measured every week for 5 weeks
c. One plant is placed in sunlight for 6 hours a day and the other plant is placed in the dark cupboard, and the height of the plants is measured and recorded every week for 5 weeks
A 5th grade class has poured five different clear, colorless liquids into five different beakers. Each beaker was half-filled with liquid. The student added 1 gram of white powder to each beaker and stirred the mixture. Observations are in the data table. In which two mixtures were a new substance formed?
a. 3 and 5
b. 1 and 2
c. 3 and 4
d. 4 and 5
a. 3 and 5