G9 Science - Class 15 Review | Baamboozle - Baamboozle

English 18 Public

Class 15 Review Activity

Study Slideshow

A central air-conditioner uses 3500W of electricity. If electricity costs $0.087/ kW*h. Calculate how much it would cost to operate the air-conditioner 24 hours a day for 4 months (120 days).

$876.96

15

Draw a parallel circuit that is powered by a 6V battery hooked up to two lamps and a open switch that controls the entire circuit. Connect an ammeter to the first lamp and a voltmeter to the second lamp.

See teacher for answer.

15

List and describe the four factors that affect resistance.

Type of material, cross-sectional area, length, temperature

10

Find the voltage and current going through each resistor in the following circuit.

I1 = 0.22A, V1 = 8.89V I2 = 0.22A, V2 = 6.67V I3 = 0.22A, V3 = 4.44V

20

Find the voltage and current going through each resistor in the following circuit.

I1 = 0.1A, V1 = 9V I2 = 0.2A, V2 = 9V I3 = 0.05A, V3 = 9V

20

Find the voltage and current going through each resistor in the following circuit.

I1 = 1.02A, V1 = 5.12V I2 = 0.71A, V2 = 2.84V I3 = 0.31A, V3 = 2.84V I4 = 1.02A, V4 = 2.04V

25

Find the voltage and current going through each resistor in the following circuit.

I1 = 1.02A, V1 = 5.12V I2 = 0.71A, V2 = 2.84V I3 = 0.31A, V3 = 2.84V I4 = 1.02A, V4 = 2.04V

25

The TRAPPIST-1 system of exoplanets is 39.46 lightyears from earth. If the speed of a space craft is 265 000 km/h, how many years would it take to travel to these exoplanets?

160 000 years

15

If there is a full moon on August 26, predict the dates of the next: - Third Quarter - New Moon - First Quarter - Full Moon

Third Quarter = Sept 2 New Moon = Sept 9 First Quarter = Sept 16 Full Moon = Sept 24

15

Is Star A moving towards or away from us? Is Star B moving towards or away from us?

Star A is moving away from us because it is red-shifted Star B is moving towards us because it is blue-shifted

15

Explain why we observe the seasons in the Northern Hemisphere.

Summer - Earth is titled towards the Sun and receives direct sunlight Winter - Earth is tilted away from Sun and energy is dispersed over a larger area.

10

Explain the following picture and how it occurs.

Blood moon - occurs during a lunar eclipse, Earth block the moon from the Sun's rays

10

Rank the following stars from brightest to dimmest as viewed from Earth.

Canopus > Arcturus > Rigel > Hadar > Gacrux

15

Distinguish the following: Comet Asteroid Meteoroid

Comet – large chunks of ice, dust and rock; Asteroid – rock and metal found between Mars and Jupiter; Meteoroid – rock and metal, smaller than asteroid

15

What labels do the numbers represent?

1-Star; 2-Planetary Nebula; 3-White Dwarf; 4-Black Dwarf; 5-Supernova/Nebula; 6-Black Hole

25

A balloon rubs against human hair. What charges does each material have?

Balloon - negative charge, Hair - positive charge

5