Force & Motion
Matter
The Universe
Ecosystems
Earth Science
100
Calculate the speed of an object traveling 15 meters in 30 seconds?
0.5 m/sec
100

The amount of space, measured in cubic units, that an object or substance occupies.

What is volume?

100
What causes the seasons on Earth?
the tilt of the Earth on its axis
100

What is a decomposer?

organism that breaks down other organisms into simpler substances

100
What is the difference between weather and climate?
Weather is the day to day conditions of the atmosphere. Climate is prevailing weather conditions of a region throughout the year averaged over several years.
200
When forces are balanced explain the motion of an object.
The motion of the object remains unchanged. Objects at rest remain at rest, and objects in motion remain in motion.
200

Is anything that has mass and takes up space (or has volume).

What is matter?

200
During July which hemisphere is receiving more direct sunlight?
Northern Hemisphere
200

What special adaptation, besides feathers, allows birds to fly?

hollow bones

200
What happens to the temperature as the altitude increases?
the temperature decreases
300

Name one of the six simple machines.

pulley, inclined plane, screw, wedge, lever, wheel and axle

300

This type of energy is transferred through a medium by wave-like disturbances (vibrations).

What is sound energy?

300
What celestial body orbits the sun and is from 480 miles to less than one mile in diameter?
asteroid
300
Given the following food chain: grass, grasshopper, robin, and hawk. What would happen if the robins all suddenly died from a disease?
Hawk population would decrease and the grasshopper population would increase causing the grass to decrease. Eventually, the grasshoppers would die off after eating all of the grass.
300

Name two renewable resources?

geothermal, hydroelectric, solar, wind

400

How much work is done when a box is moved 10 meters using a force of 50 Newtons?

Work = force X distance

Work=Force x Distance Work= 50 N x 10 m Work= 500 Nm or 500 joules

400

What happens to light as it travels through a translucency material?

The light is scattered. The image is blurred.

400
Why is it colder in the Northern Hemisphere during the winter?
The Northern Hemisphere is tilted away from the sun. As a result, the sun's rays are more spread out.
400
What is an adaptation of mammals living in an extremely cold climate?
hollow hair provides insulation
400
Where do volcanoes usually occur?
at plate boundaries
500

A machine makes work easier by changing at least one of three factors. Name one of the three factors.

changing the force, changing the direction, changing the distance

500

What forces are acting on a floating object?

gravity downward and bouyancy upward

500

Two factors act together to keep Earth in orbit around the sun.

What is inertia and gravity?

500
Name three environmentally harmful activities of humans?
water pollutation, air pollution, deforestation, overpopulation,
500
What kind of plate boundary results in the formation of a trench?
converging plate boundary
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